7th Class Mathematics Data Handling Question Bank

done Data Handling Total Questions - 40

• question_answer1)
  If mode of the observations 28, 17, 16, 13, 25, 13, 17, 28, 18, 16, 28, 17, 16, 15, 3x-5, 16, 19, 21, 15, 13, 12, 16, then find the value of x.
  A)
   0 done clear
  B)
   -5 done clear
  C)
   7 done clear
  D)
   cannot be determined done clear
  E)
   None of these done clear
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• question_answer2)
  If the median of the observation 19, 21, 23, 35, 47, x, x+2, 71, 79, 80, 92, 95 arranged in ascending order is 50. Find the value of x.
  A)
   48 done clear
  B)
   49 done clear
  C)
   51 done clear
  D)
   53 done clear
  E)
   None of these   done clear
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• question_answer3)
  The marks (out of 100) obtained by group of students in a mathematic test are 80, 79, 84, 92, 77, 64, 57, 75, 80, 54, 72 and 78. Based on this information, choose the statement which is correct?
  A)
   The range of the data is 36. done clear
  B)
     Median of the data is 77 done clear
  C)
   The mode of the data is 84. done clear
  D)
   All the above done clear
  E)
   None of these done clear
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• question_answer4)
  If the mean of 13, 17, 18, 20, x and 9. Is 16 find the value of x.
  A)
   16  done clear
  B)
   18   done clear
  C)
      19 done clear
  D)
   20 done clear
  E)
   None of these done clear
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• question_answer5)
  If the range of 10 observations is 68 and its lowest score of the data is 34 then find the highest score of the data.
  A)
   68         done clear
  B)
   86    done clear
  C)
   102  done clear
  D)
   112 done clear
  E)
   None of these done clear
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• question_answer6)
  If the mean of a data is 316 and the sum of its observations is 3792. Find the number of observations in the data.
  A)
   22  done clear
  B)
   12 done clear
  C)
   17      done clear
  D)
   27 done clear
  E)
   None of these done clear
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• question_answer7)
  If the mean of m, 3n and 2t is same as the mean of 3m, 2t and s, then which one of the following is correct?
  A)
   \[2m\text{ }+\text{ }s\text{ }=\text{ }2n\] done clear
  B)
   \[m\text{ }+\text{ }2s\text{ }=\text{ }3n\] done clear
  C)
   \[2m\text{ }+\text{ }s=3n~\]  done clear
  D)
   \[m\text{ }+\text{ }s\text{ }=\text{ }2n\] done clear
  E)
   None of these done clear
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• question_answer8)
  If the of the data 19, 28, 25, 21, 32, 17, 12, m, 11, 34, 21, 27, 29, 31, 22 is 23 then _________
  A)
  \[m>34\]             done clear
  B)
   \[11\,\,\underline{<}\,\,m\,\,\underline{<}\,\,34\] done clear
  C)
   \[23\,\,\underline{<}\,m\text{ }\underline{<}\,\,34\text{   }\] done clear
  D)
   \[19\,\,\underline{<}\,\,m\text{ }\underline{<}\text{ }42\] done clear
  E)
   None of these done clear
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• question_answer9)
  In a box, there are 7 red balls, x white balls   and 3 green balls. A ball is drawn from the box. If the probability of getting a white ball is found to be \[\frac{\mathbf{1}}{\mathbf{3}}\] then how many white balls in the box?
  A)
   15  done clear
  B)
   6  done clear
  C)
   9  done clear
  D)
     5 done clear
  E)
   None of these done clear
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• question_answer10)
  The mean of n number of observations is 36. If sum of the observations is 1044, then find the value of n.
  A)
   26 done clear
  B)
                                19 done clear
  C)
   24 done clear
  D)
                    29 done clear
  E)
   None of these done clear
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• question_answer11)
  If x is an even integer and sum of 12 Consecutive numbers from x is found to be 588, then find the mean of 10 consecutive even numbers starting from x-20.
  A)
   22 done clear
  B)
        27 done clear
  C)
   28 done clear
  D)
                                32 done clear
  E)
   None of these done clear
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• question_answer12)
  In a pie chart, the central angle for a component value of 320 when the total value is 1440, is _________
  A)
  \[~90{}^\circ \] done clear
  B)
       \[~85{}^\circ \] done clear
  C)
   \[~80{}^\circ \] done clear
  D)
  \[~75{}^\circ \] done clear
  E)
   None of these done clear
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• question_answer13)
  The least value of the probability of an event is _________.
  A)
   0  done clear
  B)
        -1 done clear
  C)
   1  done clear
  D)
                    0.1 done clear
  E)
   None of these done clear
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• question_answer14)
  In a pictograph if 1 picture represents 120 bikes, then 14640 bikes can be represented by ___________.
  A)
   120 pictures done clear
  B)
   132 pictures done clear
  C)
   122 pictures done clear
  D)
   170 pictures done clear
  E)
   None of these done clear
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• question_answer15)
  Which one among the following statements is incorrect?
  A)
   Median is the middle value of a data, when it is arranged in ascending or descending order. done clear
  B)
   On throwing a dice, the outcomes are 1, 2, 3, 4, 5 and 6 done clear
  C)
   Mean, median and made are the measures of central tendency. done clear
  D)
   The probability of an event which is impossible to happen is 1. done clear
  E)
    None of these done clear
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• question_answer16)
  In a bar graph, a bar of length 9.2 cm is represented by 460 units. The length of another bar, which is represented by 335 units, is ________
  A)
   8.8 done clear
  B)
   8.7 done clear
  C)
   6.7 done clear
  D)
   6.8 done clear
  E)
   None of these done clear
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• question_answer17)

  A coin is tossed 18 times and the recorded outcomes are:

  H H T H T T H T T T H T H H H T H T

  The chance of occurrence of a tail is________.

  A)
   50% done clear
  B)
   40%   done clear
  C)
   60%   done clear
  D)
        70% done clear
  E)
   None of these done clear
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• question_answer18)
  Which one among the following statements is incorrect?
  A)
   The data 11, 13, 17, 19, 21, 25 has every observation as mode. done clear
  B)
   The measures of central tendency he between, the maximum and minimum values of data. done clear
  C)
   Mean of the data is always from the given data. done clear
  D)
   The range of the data 13, 18, 16, 14, 19, 23, 17 would not change If 8 was subtracted from each value in the data. done clear
  E)
   None of these done clear
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• question_answer19)
  Find the probability that a student chosen at random out of 5 girls and 8 boys is a boy.
  A)
  \[\frac{5}{13}\]      done clear
  B)
    \[\frac{1}{8}\]        done clear
  C)
     \[\frac{5}{8}\]  done clear
  D)
  \[\frac{8}{13}\] done clear
  E)
   None of these done clear
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• question_answer20)
  The mean of first 8 odd natural numbers is
  A)
   8       done clear
  B)
   7       done clear
  C)
      6   done clear
  D)
   9 done clear
  E)
   None of these done clear
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• question_answer21)

  Directions: Read the following pie chart carefully and answer the questions given below it:

  Percentage of Employees in different departments of an organization = 3600

  What is the number of employees of accounts department?
  A)
   432   done clear
  B)
   362 done clear
  C)
   482 done clear
  D)
   512 done clear
  E)
   None of these done clear
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• question_answer22)

  Directions: Read the following pie chart carefully and answer the questions given below it:

  Percentage of Employees in different departments of an organization = 3600

  The ration of the number of employees of Production department to HR Department is ________.
  A)
   3: 8 done clear
  B)
   3: 4  done clear
  C)
   4: 7  done clear
  D)
    7: 12 done clear
  E)
   None of these done clear
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• question_answer23)

  Directions: Read the following pie chart carefully and answer the questions given below it:

  Percentage of Employees in different departments of an organization = 3600

  If 400 new employees are hired in the marketing department, then find the ratio of number of employees of the marketing department to the number of employees in the IT department.
  A)
   289: 225 done clear
  B)
   17: 15  done clear
  C)
   19: 16  done clear
  D)
   17: 196 done clear
  E)
   None of these done clear
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• question_answer24)

  Directions: Read the following pie chart carefully and answer the questions given below it:

  Percentage of Employees in different departments of an organization = 3600

  If 300 employees are shifted from HR department to production department, then new ratio of number of employees of HR department to the production department is 
  A)
   91: 37 done clear
  B)
   97 : 29 done clear
  C)
   28 : 59 done clear
  D)
   38 : 17 done clear
  E)
   None of these done clear
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• question_answer25)

  Directions: Read the following pie chart carefully and answer the questions given below it:

  Percentage of Employees in different departments of an organization = 3600

  If 200 new employees are hired in accounts department and 100 employees of IT department left the organization, then new ratio of number of employees of IT department to accounts department is _______.
  A)
   79: 100 done clear
  B)
   85: 97 done clear
  C)
   81: 100 done clear
  D)
   77: 97   done clear
  E)
   None of these done clear
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• question_answer26)
  If the mean of the following distribution is 21, then find the value of P.

  x	12	18	20	25	P+6
  f	8	3	7	4	6

  A)
   29 done clear
  B)
   20 done clear
  C)
   27 done clear
  D)
   12 done clear
  E)
   None of these done clear
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• question_answer27)
  Find the value of m if mean of the following distribution is 33-75.

  x	16	22	28	37	45	52
  f	9	7	3	m+2	7	9

  A)
   4 done clear
  B)
                    12 done clear
  C)
   3 done clear
  D)
   9 done clear
  E)
   None of these done clear
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• question_answer28)

  Directions: Study the following pie chart the questions given below:

  A Survey was conducted on 21600 people on the food items preferred by them.

  What is the total number of people preferring vegetables?
  A)
   3020 done clear
  B)
        4080 done clear
  C)
       5040 done clear
  D)
   5080 done clear
  E)
   None of these done clear
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• question_answer29)

  Directions: Study the following pie chart the questions given below:

  A Survey was conducted on 21600 people on the food items preferred by them.

  Find the difference between the number of people preferring Bread and salad.
  A)
   2260 done clear
  B)
   2280 done clear
  C)
   2298 done clear
  D)
   2320 done clear
  E)
   None of these done clear
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• question_answer30)

  Directions: Study the following pie chart the questions given below:

  A Survey was conducted on 21600 people on the food items preferred by them.

  People preferring fruits were what percent of the people preferring meat?
  A)
   96.875% done clear
  B)
   93.678% done clear
  C)
   94.82% done clear
  D)
   95.72% done clear
  E)
   None of these done clear
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• question_answer31)

  Directions: Study the following pie chart the questions given below:

  A Survey was conducted on 21600 people on the food items preferred by them.

  How many percent of people had preferred sprouts?
  A)
   \[8.\overline{8}%~\]% done clear
  B)
   \[7.\overline{9}%\]% done clear
  C)
   \[8.\overline{3}%~\]% done clear
  D)
   7.5% done clear
  E)
   None of these done clear
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• question_answer32)

  Directions: Study the following graph carefully to answer the questions that follow:

  Number of Students enrolled in three different disciplines in four different schools.

  What is the total number of students enrolled in Arts and Science in all the schools together?
  A)
   2530 done clear
  B)
   3530  done clear
  C)
   2820 done clear
  D)
   2720 done clear
  E)
   None of these done clear
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• question_answer33)

  Directions: Study the following graph carefully to answer the questions that follow:

  Number of Students enrolled in three different disciplines in four different schools.

  What is the respective ratio of total number of students enrolled in Science, Commerce and Arts in all the schools together?
  A)
  52: 179: 201 done clear
  B)
   153: 211:: 179 done clear
  C)
   209: 177: 184 done clear
  D)
   141: 133: 179 done clear
  E)
   None of these done clear
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• question_answer34)

  Directions: Study the following graph carefully to answer the questions that follow:

  Number of Students enrolled in three different disciplines in four different schools.

  Number of students enrolled in commerce in school B form what percent of total number of students enrolled in all the discipline together in that school? (Rounded off to two digits after decimal)
  A)
   36.89% done clear
  B)
   46.39% done clear
  C)
         42.48% done clear
  D)
   40.45% done clear
  E)
   None of these done clear
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• question_answer35)
  The weights (in kg) of 18 students are: 32, 28, 26, 25, 29, 27, 30, 42, 35, 33, 28, 26, 29, 38, 27, 32, 34, 36. The median of their weight is represented by M. If the weight 42 kg is replaced by 32 kg and weight 38 kg is replaced by 29 kg, and the median of their weights is represented by M? then find the value of M? ? M.
  A)
   0 kg done clear
  B)
        -0.5 kg done clear
  C)
   0.5 kg done clear
  D)
   1 kg done clear
  E)
   None of these done clear
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• question_answer36)
  Which one of the following is not an example of an impossible event?
  A)
   Getting a number less than 1 on throwing a die. done clear
  B)
  Getting neither head nor tail on tossing an unbiased corn done clear
  C)
   On throwing a die, getting a prime number which is not an even number. done clear
  D)
  53 Sundays in a leap year. done clear
  E)
   None of these done clear
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• question_answer37)
  In a cricket match, a batsman hits a boundary n times out of 71 he plays. If the probability that he did not hit a boundary is \[\frac{\mathbf{8}}{\mathbf{9}}\] find the value of n.
  A)
   9  done clear
  B)
        8 done clear
  C)
   18 done clear
  D)
     36 done clear
  E)
   None of these done clear
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• question_answer38)
  In a survey of 500 students, it was found that 220 like milk, 150 like coffee and 130 like tea. Out of these students, one student is chosen at random. Based on this information choose the statement which is incorrect.
  A)
   The probability that the chosen girl like tea is \[\frac{13}{50}\] done clear
  B)
  The probability that the chosen girl does not like coffee is\[\frac{7}{10}\]. done clear
  C)
   The probability that the chosen girl dislikes milk is \[\frac{2}{5}\]. done clear
  D)
  The probability that the chosen girl likes coffee is\[\frac{3}{10}\]. done clear
  E)
  None of these done clear
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• question_answer39)

  A coin is tossed 400 times and get the following outcomes.

  Head: 225 times Tail: 175 times when a coin is tossed at random, the probability of getting a head is ________.

  A)
   \[\frac{3}{4}\] done clear
  B)
   \[\frac{9}{16}\] done clear
  C)
   \[\frac{8}{9}\] done clear
  D)
   \[\frac{8}{16}\] done clear
  E)
   None of these done clear
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• question_answer40)

  A die is thrown 120 times having following outcomes.
  Outcomes	1	2	3	4	5	6
  Frequency	18	24	22	16	19	21
  A die is thrown randomly, then find the probability of getting an even 40 number.

  A)
   \[\frac{59}{120}\] done clear
  B)
   \[\frac{1}{2}\] done clear
  C)
   \[\frac{61}{120}\] done clear
  D)
   \[\frac{31}{60}\] done clear
  E)
   None of these done clear
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