9th Class Mathematics Statistics Question Bank

done Statistics Total Questions - 58

• question_answer1)
  The horizontal line in the graph is called
  A)
  X-axis            done clear
  B)
  Y-axis done clear
  C)
  line                               done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer2)
  The vertical line in the graph is called
  A)
  Y-axis        done clear
  B)
  X-axis done clear
  C)
  ray                               done clear
  D)
  none of these done clear
  View Solution play_arrow

• question_answer3)
  Highest marks are scored in the subject
  A)
  English                         done clear
  B)
  Hindi done clear
  C)
  Maths           done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer4)
  Which is the highest peak?
  A)
  A                                  done clear
  B)
  E done clear
  C)
  C                                 done clear
  D)
  B done clear
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• question_answer5)
  Write the ratio of the heights of highest peak and the lowest peak.
  A)
  22:15   done clear
  B)
  15:22 done clear
  C)
  20:13                           done clear
  D)
  13:22 done clear
  View Solution play_arrow

• question_answer6)
  Which peak is second highest?
  A)
  B                                  done clear
  B)
  A done clear
  C)
  C           done clear
  D)
  E done clear
  View Solution play_arrow

• question_answer7)
  When the heights of the given peaks are written in ascending order, then what is the average of the middle two peaks?
  A)
  7950m                         done clear
  B)
  7560m done clear
  C)
  7650m                         done clear
  D)
  7850m done clear
  View Solution play_arrow

• question_answer8)
  At what subject is the student sharp?
  A)
  English                         done clear
  B)
  Mathematics done clear
  C)
  Science                        done clear
  D)
  History done clear
  View Solution play_arrow

• question_answer9)
  In which subject is the student poor?
  A)
  English                         done clear
  B)
  Mathematics done clear
  C)
  Science                        done clear
  D)
  History done clear
  View Solution play_arrow

• question_answer10)
  What are the average marks obtained by the student?
  A)
  57         done clear
  B)
  63 done clear
  C)
  80                    done clear
  D)
  48 done clear
  View Solution play_arrow

• question_answer11)
  What is the percentage obtained by the student?       
  A)
  80%                             done clear
  B)
  63%                   done clear
  C)
  57%                done clear
  D)
  90%                 done clear
  View Solution play_arrow

• question_answer12)
  What is the ratio of the highest marks to the lowest marks obtained by the student?                             
  A)
  2:11                             done clear
  B)
  9:2          done clear
  C)
  2:9                               done clear
  D)
  11:2 done clear
  View Solution play_arrow

• question_answer13)
  The median of the following data 46, 64, 87, 41, 58, 77, 35, 90, 55, 33, 92 is
  A)
  87                                done clear
  B)
  77 done clear
  C)
  58              done clear
  D)
  60.2 done clear
  View Solution play_arrow

• question_answer14)
  Mean of a set of observations is the value which
  A)
  occurs most frequently done clear
  B)
  divides observations into two equal parts done clear
  C)
  is a representative of whole group done clear
  D)
  is the sum of observations. done clear
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• question_answer15)
  The daily earnings (in rupees) of 10 workers in a factory are 8,16,19,8,16,19,16,8,19,16. The median wage is
  A)
  Rs.17.50                      done clear
  B)
  Rs.8.00 done clear
  C)
  Rs.19.00                      done clear
  D)
  Rs.16.00 done clear
  View Solution play_arrow

• question_answer16)
  The mean of 6, y, 7, x and 14 is 8. Then
  A)
   \[x+y=13\]          done clear
  B)
   \[x-y=13\] done clear
  C)
   \[2x+3y=13\]             done clear
  D)
   \[{{x}^{2}}+{{y}^{2}}=15\] done clear
  View Solution play_arrow

• question_answer17)
  The mode of a set of observations is the value which
  A)
  occurs most frequently done clear
  B)
  is central done clear
  C)
  is between maximum and minimum done clear
  D)
  none of the foregoing done clear
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• question_answer18)
  The difference between the maximum and the minimum observations in the data is
  A)
  Class interval         done clear
  B)
  Frequency done clear
  C)
  Cumulative frequency done clear
  D)
  Range done clear
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• question_answer19)
  The number of times a particular item occurs in a class interval is called its
  A)
  Mean                done clear
  B)
  Frequency done clear
  C)
  Cumulative frequency done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer20)
  If the mean of x and 1/x is M, then the mean of \[{{x}^{2}}\] and s\[1/{{x}^{2}}\] is
  A)
   \[{{M}^{2}}\]                      done clear
  B)
   \[{{M}^{2}}/4\] done clear
  C)
   \[2{{M}^{2}}-1\]       done clear
  D)
   \[2{{M}^{2}}+1\] done clear
  View Solution play_arrow

• question_answer21)
  In an examination, a candidate scores the following percentage of marks. English ? 44; Hindi ? 58; Maths?74; Physics ? 61; Chemistry? 62. If weights 2, 4, 4, 5, 3 respectively allotted to these subjects, then the candidate's weighted mean percentage is
  A)
  61                                done clear
  B)
  61.5 done clear
  C)
  62                   done clear
  D)
  62.5 done clear
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• question_answer22)
  The average monthly income of a four members family is Rs.610.25, after the marriage of one girl the average income of the family becomes Rs.650.75, then the salary of married girl is
  A)
  Rs.488.25                    done clear
  B)
  Rs.488.75 done clear
  C)
  Rs.479.75                    done clear
  D)
  Rs.489.25 done clear
  View Solution play_arrow

• question_answer23)
  The mean of first 10 natural numbers is
  A)
   \[\frac{5}{2}\]                        done clear
  B)
   \[\frac{11}{2}\] done clear
  C)
   \[\frac{13}{2}\]                                  done clear
  D)
  5 done clear
  View Solution play_arrow

• question_answer24)
  In a class test in English, 10 students scored 75 marks, 12 scored 60 marks, 8 scored 40 marks and 3 scored 30 marks. The mode for their scores is
  A)
  75                                done clear
  B)
  30 done clear
  C)
  60                    done clear
  D)
  25 done clear
  View Solution play_arrow

• question_answer25)
  The mean of first five prime numbers is
  A)
  3                                  done clear
  B)
  3.6 done clear
  C)
  7                                  done clear
  D)
  5.6 done clear
  View Solution play_arrow

• question_answer26)
  The mean of 20 items of a data is 5; and if each item is multiplied by 3, then the mean will be
  A)
  5                                  done clear
  B)
  10 done clear
  C)
  15                   done clear
  D)
  20 done clear
  View Solution play_arrow

• question_answer27)
  Following table shows the weights of 12 students

  Weight (in kgs)	67	70	72	73	75
  Number of students	4	3	2	2	1

  The mean weight is
  A)
  70.36                           done clear
  B)
  70.89 done clear
  C)
  70.25                 done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer28)
  Mean of ages of 20 students is 10 years. 5 students with mean age of 15 years leave the class. Mean of ages of the remaining students will be:
  A)
  4                                  done clear
  B)
  5.66 done clear
  C)
  6.25                             done clear
  D)
  8.33 done clear
  View Solution play_arrow

• question_answer29)
  A student gets the following percentages in an examination English = 50%, Biology = 40%, Mathematics = 60%, Physics = 70%, Chemistry = 80% It was suggested that he has been given double weight age on his marks in Physics and Chemistry than in other subjects. What is the arithmetic weight age mean of marks?
  A)
  57.4                             done clear
  B)
  59.4 done clear
  C)
  58.4                             done clear
  D)
  64.28 done clear
  View Solution play_arrow

• question_answer30)
  Find the mean of 50 observations. It is given that the mean of 32 of them is 28 and the mean of the remaining 18 observations is 30.
  A)
  30.24                           done clear
  B)
  28.72 done clear
  C)
  24.82                           done clear
  D)
  30.32 done clear
  View Solution play_arrow

• question_answer31)
  Five students were tested in English and Hindi and the marks obtained by them were as under:

  	A	B	C	D	E
  English	55	60	82	65	75
  Hindi	21	25	86	90	99

  Which subject has a better median value:
  A)
  Hindi           done clear
  B)
  English done clear
  C)
  Both                             done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer32)
  Mean of the following frequency distribution is:

  Class	0 ? 5	5-10	10-15	15-20	20-25
  Frequency	2	4	8	6	10

  A)
  15.5           done clear
  B)
  16.5 done clear
  C)
  14.5                             done clear
  D)
  13.5 done clear
  View Solution play_arrow

• question_answer33)
  Average of 10 number is 15. Average of first six number is 20 and that of least five number is 18. What is the sixth number?
  A)
  60               done clear
  B)
  70 done clear
  C)
  50                                done clear
  D)
  85 done clear
  View Solution play_arrow

• question_answer34)
  The statistical data are of two types. These types are
  A)
  Technical data and presentation data done clear
  B)
  Primary data and secondary data done clear
  C)
  Primary data and personal data done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer35)
  Following are the percentages of marks of 10 students of a class: 50, 60, 70, 72, 74, 75, 80, 88, 75, 100 Frequency of students in the class (60 - 68) will be:
  A)
  5                                  done clear
  B)
  1 done clear
  C)
  6                                  done clear
  D)
  3 done clear
  View Solution play_arrow

• question_answer36)
  The mode of the following data:

  Size	1	3	5	7	9
  Frequency	6	9	12	3	15

  is
  A)
  9                       done clear
  B)
  7 done clear
  C)
  5                                  done clear
  D)
  3 done clear
  View Solution play_arrow

• question_answer37)
  If the mean of \[{{x}_{1}}\] and that of \[{{x}_{1}},{{x}_{2}}{{x}_{3}},{{x}_{4}}\] is \[{{M}_{2}}\]the mean of \[{{x}_{1}},\]\[{{x}_{2}}\text{/}a,\]\[{{x}_{3}}+a,\]\[{{x}_{4}}-a\]is
  A)
   \[{{M}_{1}}+\frac{(a-1)({{x}_{1}}-2{{M}_{1}})}{4a}\] done clear
  B)
   \[{{M}_{1}}+\frac{(a-1)\,{{x}_{1}}-2{{M}_{2}}}{4a}\] done clear
  C)
   \[\frac{{{M}_{2}}}{4a}+(a-1){{x}_{1}}+2{{M}_{1}}\] done clear
  D)
   \[\frac{{{M}_{1}}}{4a}+(a-1){{x}_{2}}+2{{M}_{2}}\] done clear
  View Solution play_arrow

• question_answer38)
  The mean of \[{{x}_{1}},{{x}_{2}}.......{{x}_{50}}\] is M, if every \[{{x}_{i}},\,\,i=1,2.....50\]is replaced by \[{{x}_{p}}i=1,2.....50\] then the mean is
  A)
  M                                 done clear
  B)
   \[M+\frac{1}{50}\] done clear
  C)
   \[\frac{50}{M}\]                     done clear
  D)
   \[\frac{M}{50}\] done clear
  View Solution play_arrow

• question_answer39)
  The attendance of a class of 45 boys for 10 days is given as 40, 42, 30, 35, 45, 44, 41, 38, 44 and 41 then the mean attendance of a class is
  A)
  39                                done clear
  B)
  40 done clear
  C)
  41                                done clear
  D)
  43 done clear
  View Solution play_arrow

• question_answer40)
  The numbers 3, 5, 6 and 4 have frequencies of x, x + 2, x ? 8 and x + 6 respectively. If their mean is 4 then the value of x is
  A)
  5                                  done clear
  B)
  6 done clear
  C)
  7      done clear
  D)
  8 done clear
  View Solution play_arrow

• question_answer41)
  50% of all the cars consisted of which colours of car?
  A)
  Black, Golden, Blue, Red done clear
  B)
  Blue, Black, Red, Silver done clear
  C)
  White, Golden, Blue, Black done clear
  D)
  White, Blue, Green, Black done clear
  View Solution play_arrow

• question_answer42)
  Cars of which color are 20% less popular than white coloured cars?
  A)
  Black                           done clear
  B)
  Golden done clear
  C)
  Red                              done clear
  D)
  Blue done clear
  View Solution play_arrow

• question_answer43)
  Cars of which colour are 13% less popular than white cars?
  A)
  Blue               done clear
  B)
  Green done clear
  C)
  Silver                           done clear
  D)
  Yellow done clear
  View Solution play_arrow

• question_answer44)
  Cars of which colour when increased by two per cent and then combined with that of red cars will make 30 per cent of the total?
  A)
  Golden                         done clear
  B)
  Blue done clear
  C)
  Black                           done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer45)
  If in a certain period the total production of all cars was 95400 then how many more blue cars were sold than green?
  A)
  2580                            done clear
  B)
  3618 done clear
  C)
  2850                            done clear
  D)
  3816 done clear
  View Solution play_arrow

• question_answer46)
  Which of the following state(s) contribute(s) less than 10 per cent in the total rose production?
  A)
  Only Rajasthan done clear
  B)
  Rajasthan, Kama taka done clear
  C)
  Rajasthan, Kama taka, Haryana done clear
  D)
  Rajasthan, Kama taka, Haryana and Gujarat done clear
  View Solution play_arrow

• question_answer47)
  By what percentage rose production of other states is more than that of the Maharashtra?
  A)
  25                done clear
  B)
  30 done clear
  C)
  20                                done clear
  D)
  15 done clear
  View Solution play_arrow

• question_answer48)
  What is the approximate average production of roses (in thousands) across all the states?
  A)
  21                                done clear
  B)
  20 done clear
  C)
  19                                done clear
  D)
  18 done clear
  View Solution play_arrow

• question_answer49)
  Approximately what percentage of the total rose production is shared by the other states
  A)
  10                                done clear
  B)
  20 done clear
  C)
  30                                done clear
  D)
  40 done clear
  View Solution play_arrow

• question_answer50)
  If total percentage contribution of the states having production of roses below twenty thousand is considered, which of the following statements is true?
  A)
  It is little above 40%  done clear
  B)
  If is exactly 35% done clear
  C)
  It is below 35%        done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer51)
  DIRECTIONS: Following questions consist of two statements, one labelled as the ?Assertion (A)? and the other as ?Reason (R)?. You are to examine these two statements carefully and select the answer to these items using the code given below. Assertion (A): Median of first ten prime number is 12 Reason (R): If n is even, then Median = size of \[\frac{\text{1}}{\text{2}}\left[ \left( \frac{\text{n}}{\text{2}} \right)\text{th item+}\left( \frac{\text{n}}{\text{2}}\text{+1} \right)\text{th item} \right]\]
  A)
  Both A and R are individually true and R is the correct explanation of A. done clear
  B)
  Both A and R are individually true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer52)
  DIRECTIONS: Following questions consist of two statements, one labelled as the ?Assertion (A)? and the other as ?Reason (R)?. You are to examine these two statements carefully and select the answer to these items using the code given below. Assertion (A): The mean of 25 observations is 36. If the mean of the first 13 observations is 32 and that of the last 13 observations is 39, then the 13th observation is 23. Reason (R): The mean of 31 results is 60. If the mean of first 16 results is 58 and that of last 16 results is 62, then the 16th result is 58.
  A)
  Both A and R are individually true and R is the correct explanation of A. done clear
  B)
  Both A and R are individually true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer53)
  How many children are in her class?
  A)
  30                    done clear
  B)
  42 done clear
  C)
  28                                done clear
  D)
  37 done clear
  View Solution play_arrow

• question_answer54)
  What is the mode of the distribution?
  A)
  Green                          done clear
  B)
  Blue done clear
  C)
  Red                              done clear
  D)
  Yellow done clear
  View Solution play_arrow

• question_answer55)
  Above given information is also to be represented in a pie- chart. Calculate the angle of the sector representing yellow.
  A)
   \[{{90}^{o}}\]                    done clear
  B)
   \[{{60}^{o}}\] done clear
  C)
   \[{{52}^{o}}\]                     done clear
  D)
   \[{{72}^{o}}\] done clear
  View Solution play_arrow

• question_answer56)
  DIRECTIONS: Read the following passages and answer the questions that follow. PASSAGE - 2 When the data is arranged in ascending or descending order, the middle observations is called median. If the number of observations is odd, then there will be only one middle term. If the number of observation is even, then there will be two middle terms. Which one is the median of the following data: 25,28,22,24,27,23,22
  A)
  24            done clear
  B)
  28 done clear
  C)
  32                                done clear
  D)
  12 done clear
  View Solution play_arrow

• question_answer57)
  DIRECTIONS: Read the following passages and answer the questions that follow. PASSAGE - 2 When the data is arranged in ascending or descending order, the middle observations is called median. If the number of observations is odd, then there will be only one middle term. If the number of observation is even, then there will be two middle terms. When number of observations is even then median is    
  A)
  Mean of two middle terms           done clear
  B)
  Sum of two middle terms done clear
  C)
  Difference of two middle terms                     done clear
  D)
  Only middle term                                   done clear
  View Solution play_arrow

• question_answer58)
  DIRECTIONS: Read the following passages and answer the questions that follow. PASSAGE - 2 When the data is arranged in ascending or descending order, the middle observations is called median. If the number of observations is odd, then there will be only one middle term. If the number of observation is even, then there will be two middle terms. Which one of the following is the correct explanation of Median?                                           
  A)
  Median is obtained by taking average of the given set of observations,                                    done clear
  B)
  Median is the middle most observation.             done clear
  C)
  When the given observations are arranged in ascending or descending order, then median is the middle observation.      done clear
  D)
  None of these        done clear
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