9th Class Mathematics Statistics Question Bank

done Statistics Total Questions - 30

• question_answer1)
  The median of the following data is : 36, 46, 32, 42, 33, 52, 50, 48, 56, 60, 53, 95, 75, 80, 70 is:
  A)
   48                                done clear
  B)
   56              done clear
  C)
   52 done clear
  D)
   60 done clear
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• question_answer2)
  The mean of n observation is \[\overline{\mathbf{X}.}\]If the first item is increased by 1, seconds by 2 and so on, then the new mean is
  A)
   \[\overline{X}+n\]                     done clear
  B)
   \[\overline{X}+\frac{n}{2}\]           done clear
  C)
   \[\overline{X}+\frac{n+1}{2}\] done clear
  D)
   None of these done clear
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• question_answer3)
  When Ahmed walked through a shopping mall. He recorded the number of customers in each shop. The data is displayed in a dot plot. What percentage of shops had at least 4 customers?
  A)
   25%                             done clear
  B)
   48% done clear
  C)
   33%                             done clear
  D)
   44% done clear
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• question_answer4)
  The stem-and-leaf plot alongside shows the ten pin bowling scores of John. What percentage of John's scores have been 100 or higher?

  Steam	Leaf
  7	6 8
  8	2 5 8
  9	1 1 2 5 9
  10	1 2 4
  11	0
  12	6
  13	2 7

  A)
   14.2                             done clear
  B)
   12.70            done clear
  C)
   21.6                             done clear
  D)
   41.17 done clear
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• question_answer5)
  A frequency table for the height h of the players in a basketball squad is given alongside. What is the modal class?

  Height-h (cm)	Frequency
  \[170\le h<175\]	1
  \[175\le h<180\]	8
  \[180\le h<185\]	9
  \[185\le h<190\]	11
  \[190\le h<195\]	9
  \[195\le h<200\]	3
  \[200\le h<200\]	3

  A)
   \[185\le h<190\] done clear
  B)
   \[195\le h<200\] done clear
  C)
   \[190\le h<195\]            done clear
  D)
   \[175\le h<180\] done clear
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• question_answer6)
  Student in a Hotel Management College were instructed to bake a cake. The table alongside shows the time taken for the students to complete the task. Students longer than 2 hours received a penalty. What percentage of students received a penalty?

  Time t (min )	Frequency
  \[55\le t<60\]	4
  \[60\le t<70\]	2
  \[70\le t<80\]	5
  \[80\le t<90\]	3
  \[90\le t<100\]	10
  \[100\le t<110\]	8
  \[110\le t<120\]	10
  \[120\le t<130\]	13
  \[130\le t<140\]	5

  A)
   43                                done clear
  B)
   46              done clear
  C)
   45                                done clear
  D)
   30 done clear
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• question_answer7)
  The data in the table below shows the number of people at each table at a restaurant. What is the median of this data?

  Number of people	5	6	7	8	9	10	11	12
  Frequency	1	0	3	9	12	7	4	2

  A)
   7                                 done clear
  B)
   9 done clear
  C)
   9.5                               done clear
  D)
   9.25 done clear
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• question_answer8)
  The table below shows the number of aces scored by tennis players in their first match of tournament

  No of aces	1	2	3	4	5
  Frequency	4	11	18	13	7

  What is the mean number of all tor these aces?
  A)
   3.15 done clear
  B)
   3                done clear
  C)
   3.75                             done clear
  D)
   3.95 done clear
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• question_answer9)
  Sixty people were asked. "How many times have you been in the cinema in the last twelve months? The results are given in the table alongside what is the mean of the data

  Number of times	Frequency
  0-5	19
  6-10	24
  11-15	10
  16-20	5
  21-25	2

  A)
   9.23                             done clear
  B)
   6.52     done clear
  C)
   7.52     done clear
  D)
   3.56 done clear
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• question_answer10)
  The table below shows the number of passengers in the car at a above in movie theatre. What is the range of given data?

  Number of passengers	1	2	3	4	5	6
  Frequency	2	10	10	17	11	5

  A)
   3                                 done clear
  B)
   5 done clear
  C)
   4                                 done clear
  D)
   6 done clear
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• question_answer11)
  The number of potatoes growing on each of 100 potato plants were recorded and summarized in the table below

  Number of passengers	0-2	3-5	6-8	9-11	12-14	15-17
  Frequency	7	11	25	40	15	2

  What is the mean number of potatoes per plant?
  A)
   7.53                             done clear
  B)
   9.12              done clear
  C)
   8.53 done clear
  D)
   5.83 done clear
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• question_answer12)
  The table below shows the no. of passengers travelling in different cars while driving to a movie theatre. How many cars are there which have reached the theatre?

  Number of passengers	1	2	3	4	5	6
  Frequency	2	19	10	17	11	5

  A)
   62                                done clear
  B)
   64 done clear
  C)
   66                                done clear
  D)
   68 done clear
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• question_answer13)
  What is the median of the data given below?
  A)
   5                                 done clear
  B)
   6               done clear
  C)
   4                                 done clear
  D)
   3 done clear
  View Solution play_arrow

• question_answer14)
  What is the mean of the data given below?
  A)
   5.4                               done clear
  B)
   5.6       done clear
  C)
   5.3                               done clear
  D)
   5.2 done clear
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• question_answer15)
  The speed of 120 cars measured at a particular point on country road they are shown in the table alongside. What is the mean speed of the drivers?

  Speed V (km/h)	Frequency
  \[40\le V<50\]	1
  \[50\le V<60\]	3
  \[60\le V<70\]	17
  \[70\le V<80\]	39
  \[80\le V<90\]	48
  \[90\le V<100\]	17
  \[100\le V<110\]	4

  A)
   70.3                             done clear
  B)
   80               done clear
  C)
   70                                done clear
  D)
   80.3 done clear
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• question_answer16)
  The table alongside shows the area of the blocks of land along a street. What is the modal class of given data?

  Area  \[{{m}^{2}}\]	Frequency
  \[400\le A<500\]	5
  \[500\le A<600\]	11
  \[600\le A<700\]	12
  \[700\le A<800\]	10
  \[800\le A<900\]	8

  A)
   \[600\le A<700\] done clear
  B)
   \[500\le A<600\] done clear
  C)
   \[700\le A<800\]        done clear
  D)
   \[400\le A<500\] done clear
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• question_answer17)
  What is the mean of the following data set?
  A)
   7.8                               done clear
  B)
   6.2               done clear
  C)
   5.3                               done clear
  D)
   7.2 done clear
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• question_answer18)
  What is the median of the following data set?

  Steam	Leaf
  2	5  8  9
  3	1  3  3  6  8
  4	0  5  6
  5	1  3
  6	0  7
  Scale 2/5=25

  A)
   35                                done clear
  B)
   37        done clear
  C)
   36                                done clear
  D)
   38 done clear
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• question_answer19)
  A randomly selected sample of small businessman was asked the following question. How many full time employees are there in your businesses? After obtaining their replies, the results are shown in the bar chart alongside. What percentage of the businessman had five or more full time employees?
  A)
   44.2% done clear
  B)
   26% done clear
  C)
   21.5%              done clear
  D)
   24.5% done clear
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• question_answer20)
    Hayden makes deliveries for a white goods store. He score the number of deliveries he make each day for 40 days. On how many days has Hayden made at least 10 deliveries?

  No. of deliveries	Frequencies
  5	1
  6	4
  7	8
  8	11
  9	9
  10	5
  11	2

  A)
   16                                done clear
  B)
   7   done clear
  C)
   17                                done clear
  D)
   26 done clear
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• question_answer21)

  Direction: The pie chart given below shows the marks obtained by a student in an examination. If the total marks obtained by him in the examination were 720 answer the questions given below based on this pie chart.

  In which subject, did the student obtain 110 marks?
  A)
   Maths                           done clear
  B)
   Social studies      done clear
  C)
   Science             done clear
  D)
   Hindi done clear
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• question_answer22)

  Direction: The pie chart given below shows the marks obtained by a student in an examination. If the total marks obtained by him in the examination were 720 answer the questions given below based on this pie chart.

  What is the central angle corresponding to Maths?
  A)
   \[{{40}^{{}^\circ }}\]                        done clear
  B)
   \[{{80}^{{}^\circ }}\]             done clear
  C)
   \[{{75}^{{}^\circ }}\]                                    done clear
  D)
   \[{{60}^{{}^\circ }}\] done clear
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• question_answer23)

  Direction: The pie chart given below shows the marks obtained by a student in an examination. If the total marks obtained by him in the examination were 720 answer the questions given below based on this pie chart.

  How many more marks were obtained by the student in English than those in Social Science?
  A)
   50        done clear
  B)
   20            done clear
  C)
   10                                done clear
  D)
   40 done clear
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• question_answer24)

  Direction: The pie chart given below shows the marks obtained by a student in an examination. If the total marks obtained by him in the examination were 720 answer the questions given below based on this pie chart.

  How many marks were obtained by the student in Maths?
  A)
   130                              done clear
  B)
   160     done clear
  C)
   125                              done clear
  D)
   140 done clear
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• question_answer25)

  Direction: Study the following graph and answer the questions.

  Find the percentage decrease in income from 2012 to 2013
  A)
   50%                             done clear
  B)
   33%             done clear
  C)
   37%                             done clear
  D)
   Data inadequate done clear
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• question_answer26)

  Direction: Study the following graph and answer the questions.

  If the income shows positive growth every year throughout the period (2011- 2016)9 then in how many years the expenditure shows a positive growth?
  A)
   5                                 done clear
  B)
   3              done clear
  C)
   4                                 done clear
  D)
   2 done clear
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• question_answer27)

  Direction: Study the bar diagram given below carefully and answer the following questions based on it.

  The birth-rate of which country is 25% more than that of Netherland?
  A)
   India                            done clear
  B)
   China            done clear
  C)
   Japan done clear
  D)
   New Zealand done clear
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• question_answer28)

  Direction: Study the bar diagram given below carefully and answer the following questions based on it.

  The birth rate of India is what percent of the birth rate of Japan?
  A)
   165% done clear
  B)
   155%          done clear
  C)
   140%                           done clear
  D)
   100% done clear
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• question_answer29)

  Direction: Study the bar diagram given below carefully and answer the following questions based on it.

  The birth rate of Bangladesh is how many times the birth rate of Netherland?
  A)
   0.4                               done clear
  B)
   5.2              done clear
  C)
   4.0                               done clear
  D)
   2.5 done clear
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• question_answer30)

  Direction: Study the bar diagram given below carefully and answer the following questions based on it.

  What is the ratio of birth rate of India to that of France?
  A)
   5 : 11                           done clear
  B)
   \[11:5\]    done clear
  C)
   2 : 1                             done clear
  D)
   \[1:2\] done clear
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