7th Class Mathematics Data Handling Question Bank

done Data Handling & Graphs Total Questions - 40

• question_answer1)
  The mean of 10 observations is\[5.5\]. When one new observation is included in the data set, the mean of the observations becomes\[6.0\]. What is the value of new observation that was added to the data set?
  A)
   11                   done clear
  B)
   10             done clear
  C)
   12                   done clear
  D)
   13 done clear
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• question_answer2)
  Yoga classes were held for following duration in a particular week.

  Day	Duration of exercise (min)
  Sunday	40
  Monday	50
  Tuesday	60
  Wednesday	x
  Thursday	30
  Friday	90
  Saturday	90

  If the average duration of yoga class in the week is 60 minutes, what was the duration of yoga class on Wednesday?
  A)
   \[60\text{ }min\]    done clear
  B)
   \[30\text{ }min\]         done clear
  C)
   \[55\text{ }min\]                      done clear
  D)
   \[65\text{ }min\] done clear
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• question_answer3)
  What is the arithmetic mean of 2, ...............9, 10 and 11?
  A)
   \[6.5\]         done clear
  B)
   7               done clear
  C)
   7.5                  done clear
  D)
   8 done clear
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• question_answer4)
  The runs scored by India team in recently held five matches ODI series, are 310, 306, 288,222,374. What is the average score of India in the series?
  A)
   294                             done clear
  B)
   300           done clear
  C)
   288                 done clear
  D)
   310 done clear
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• question_answer5)
  In a data, 11 numbers are arranged in increasing order. If the 9th number is increased by 1; the median increases by
  A)
   Zero     done clear
  B)
   1              done clear
  C)
   \[1.5\]                         done clear
  D)
   2 done clear
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• question_answer6)
  What is the mean of the first seven prime numbers?
  A)
   \[9\frac{5}{7}\]                        done clear
  B)
   \[9\frac{5}{8}\]           done clear
  C)
   \[7\]                             done clear
  D)
   \[8\frac{2}{7}\] done clear
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• question_answer7)
  The number of candidates who appeared for a certain competitive exam in consecutive six years is 1 lakh, \[1.50\]lakh, 2 lakh, \[1.5\]lakh, \[0.9\]lakh, \[2.7\]lakh. What is the average of the number of candidates who appeared?
  A)
   \[1\text{ }lakh\]                       done clear
  B)
   \[1.6\text{ }lakh\]   done clear
  C)
   \[1.55\text{ }lakh\]                  done clear
  D)
   \[2.6\text{ }lakh\] done clear
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• question_answer8)
  The mean of 5 observations is 7. If mean of the first three observations is 5 and that of the last three is 9, then the third observation is.
  A)
   5                                 done clear
  B)
   10             done clear
  C)
   7         done clear
  D)
   9 done clear
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• question_answer9)
  The mean of 8 numbers is 10. If one number is excluded, mean of the remaining numbers becomes9, then the excluded number is
  A)
   16                               done clear
  B)
   9             done clear
  C)
   8                                 done clear
  D)
   17 done clear
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• question_answer10)
  The median value of the given data is 98,75,90,181,171,101,94,100, 710, 500, 7,16
  A)
   97                               done clear
  B)
   98            done clear
  C)
   93                   done clear
  D)
   99 done clear
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• question_answer11)
  When a coin is tossed at random, then the probability of getting a tail is:
  A)
   \[\frac{1}{3}\]                                    done clear
  B)
   \[\frac{1}{2}\]      done clear
  C)
   \[\frac{3}{4}\]                        done clear
  D)
   \[\frac{1}{4}\] done clear
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• question_answer12)
  A coin is tossed 500 times and head is obtained 280 times. On tossing a coin at random, the probability of getting a tail is
  A)
   \[\frac{1}{99}\]                                  done clear
  B)
  \[\frac{1}{2}\] done clear
  C)
   \[\frac{3}{50}\]                        done clear
  D)
   \[\frac{11}{25}\] done clear
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• question_answer13)
  What is the mode of the data 46, 64, 87,41, 64, 77, 78, 46, 36, 64, 66.
  A)
   46                               done clear
  B)
   77            done clear
  C)
   64               done clear
  D)
   65 done clear
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• question_answer14)
  Which of the following is true about mean?
  A)
   It occurs most frequently done clear
  B)
   It divides observations into two equal parts. done clear
  C)
   It is representative of the whole group. done clear
  D)
   It is the sum of observations. done clear
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• question_answer15)
  If each entry of a data is increased by 2, how does the mean change?
  A)
   Remains the same.                done clear
  B)
   Increases by 2 done clear
  C)
   Decreases by 5                    done clear
  D)
   Becomes half. done clear
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• question_answer16)
  The average weight of a sample of 10 fruits is 60 g. Later, it was found that the weighing machine had shown the weight of each fruit 5 g less. What is the correct average weight of a fruit?
  A)
   \[65\,g\]          done clear
  B)
   \[55\,g\]          done clear
  C)
   \[50\,g\]                       done clear
  D)
   \[60\,g\] done clear
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• question_answer17)
  The mean of 6, y, 4, x and 11 is 7. Which of the following is true?
  A)
   \[x+y=14\]       done clear
  B)
   \[x-y=14\] done clear
  C)
   \[3x+4y=63\]               done clear
  D)
   \[{{x}^{2}}-{{y}^{2}}=21\] done clear
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• question_answer18)
  Which of the following is incorrect about mode?
  A)
   It is a central tendency done clear
  B)
   It occurs most frequently done clear
  C)
   It may between the maximum and minimum observations done clear
  D)
   It is the average of the two middle terms. done clear
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• question_answer19)
  Rajani has a box with 16 marbles numbered from 1 to 16 on each of them. She picks a marble from it without seeing. What is the probability that the marble picked has the number 6 on it?
  A)
   \[\frac{1}{16}\]         done clear
  B)
   \[\frac{1}{8}\]             done clear
  C)
   \[\frac{3}{8}\]                        done clear
  D)
   \[\frac{1}{2}\] done clear
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• question_answer20)
  Which of the following statements is correct?
  A)
   The mean, median, and mode of a data set are always equal done clear
  B)
   A data set can have more than one mode done clear
  C)
   A data set can have more than one median done clear
  D)
   A data set can have more than one mean done clear
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• question_answer21)
  Faces of a cubical block is painted in violet, pink, blue, green, yellow & orange colour. The block is rolled. What is the probability of getting orange colour?
  A)
   \[\frac{2}{3}\]                                               done clear
  B)
   \[\frac{1}{2}\] done clear
  C)
   \[\frac{1}{3}\]                                   done clear
  D)
   \[\frac{1}{6}\] done clear
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• question_answer22)
  The given table shows the number of students in various classes of a certain school for the academic session 2016-17.

  Class	I	II	III	IV	V
  Number of students	90	100	70	80	90

  Which bar graph correctly represents the given information?
  A)
    done clear
  B)
    done clear
  C)
    done clear
  D)
    done clear
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• question_answer23)

  The given double bar graph shows the literate population of five cities I, II, III, IV, V along with the population of literate females.

  Which city has the largest literate male population?

  A)
   II                                 done clear
  B)
   IV            done clear
  C)
   III                    done clear
  D)
   I done clear
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• question_answer24)
  Which of the following is true?
  A)
   The mean of the first 7 natural numbers is the same as their median. done clear
  B)
   The mean of the first 7 natural numbers is the same as the mean of the first 7 whole numbers. done clear
  C)
   The median of the first 7 whole number is the same as the mean of the first 7 natural numbers. done clear
  D)
   The mode of first 7 whole numbers is 7. done clear
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• question_answer25)
  The pie - chart depicts the results of a survey conducted to identify the favorite game of some students. Home many students like other games if the total number of students is 360?
  A)
   100                             done clear
  B)
   90            done clear
  C)
   55                               done clear
  D)
   65 done clear
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• question_answer26)
  In which of these situations is a double bar graph useful?

  (i) Enrolment of students in class VII in 2009 and 2010.

  (ii) Marks obtained in Term I and Term II examinations.

  (iii) Marks obtained in all subjects of a term examination.

                                
  A)
   (i) and (ii)     done clear
  B)
   (ii) and (iii)      done clear
  C)
   (iii) and (i)                  done clear
  D)
   (i) only done clear
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• question_answer27)
  The median of first seven consecutive even numbers a, b, c, d, e, f and g is
  A)
   \[\left( c+e \right)/4\]                           done clear
  B)
   b done clear
  C)
   \[\left( a+g \right)/2\]        done clear
  D)
   \[\left( a+b+c+d \right)/4\] done clear
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• question_answer28)
  The mean, median and mode of the following data are respectively: 5, 17,21,21,7,13,1,3
  A)
   12, 12, 21       done clear
  B)
   21, 21, 21     done clear
  C)
   11, 10, 21          done clear
  D)
   11, 7, 21 done clear
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• question_answer29)
  The mean age of 29 students of a class is 11 years. If the age of their teacher is also included then the mean is increased by one year. What is the age of the teacher?
  A)
   40 years          done clear
  B)
   51 years        done clear
  C)
   41 years     done clear
  D)
   55 years done clear
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• question_answer30)
  The mean temperature of Day 1, Day 2 and Day 3 is \[40{}^\circ C\]. The mean temperature of Day 2, Day 3 and Day 4 is \[41{}^\circ C\]. If the temperature of Day 4 is \[30{}^\circ C,\] then the temperature on Day 1 is:
  A)
   \[31{}^\circ C\]                         done clear
  B)
   \[33{}^\circ C\] done clear
  C)
   \[41{}^\circ C\]                    done clear
  D)
   \[27{}^\circ C\] done clear
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• question_answer31)
  The median of the following observations arranged in ascending order is 24, find x. \[11,\text{ }12,\text{ }14,\text{ }18,\text{ }x+2,\text{ }x+4,\text{ }30,\text{ }32,\text{ }35\]and 41.
  A)
   \[10\]                          done clear
  B)
   \[23\]             done clear
  C)
   \[21\]        done clear
  D)
   \[26\] done clear
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• question_answer32)
  What is the mean of n, \[n+1,\text{ }n+3,\text{ }n+7,\]and \[n+9\]?
  A)
   \[n+2.5\]                     done clear
  B)
   \[n+4\]        done clear
  C)
   \[n+6\]                       done clear
  D)
   \[n+6.5\] done clear
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• question_answer33)
  Find out the marks in SST from pie chart given below, if the total marks be 540.
  A)
   \[174\]             done clear
  B)
   \[99\]            done clear
  C)
   \[147\]                         done clear
  D)
   \[120{}^\circ \] done clear
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• question_answer34)
  The diagrammatic representation with the help of pictures is called:
  A)
   Histogram       done clear
  B)
   Pie chart        done clear
  C)
   Pictogram        done clear
  D)
   Bar chart done clear
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• question_answer35)
  Which of these is certain to happen?
  A)
   You look older yesterday than today done clear
  B)
   You look older today than yesterday done clear
  C)
   A tossed coin will land heads up.     done clear
  D)
   Tomorrow will be a sunny day. done clear
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• question_answer36)
  Which of these is impossible to happen?
  A)
   A tossed coin lands with heads up.    done clear
  B)
   A tossed die lands up with 3 on top. done clear
  C)
   The next traffic light is green        done clear
  D)
   A die thrown lands up with 8 on top. done clear
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• question_answer37)
  Which of these event has probability = 1 certainly?
  A)
   A tossed coin lands with heads up.   done clear
  B)
   The sim rises in the east.         done clear
  C)
   A die thrown lands with 3 on the top. done clear
  D)
   The sun revolves around the earth. done clear
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• question_answer38)

  Direction: The bar graph shows the marks obtained by four students in quarterly examination.

  Whose performance was the best?
  A)
   Kundan           done clear
  B)
   Kritika        done clear
  C)
   Shyam                        done clear
  D)
   Mohan done clear
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• question_answer39)

  Direction: The bar graph shows the marks obtained by four students in quarterly examination.

  Which two students secured equal marks?
  A)
   Kritika & Mohan                done clear
  B)
   Kritika & Shyam done clear
  C)
   Mohan & Shyam                done clear
  D)
   Shyam & Mohan done clear
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• question_answer40)
  The run scored by 11 member of a cricket team are: 34, 0, 29, 34, 69, 73, 69, 6, 0, 34, 96. If we represent the given data by using tally diagram, which score with have the highest frequency:
  A)
   0                                 done clear
  B)
   34       done clear
  C)
   69                               done clear
  D)
   96 done clear
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