EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Statistics
Grade : ICSE Grade VII
License : Non Commercial Use
Question 1
1.
    • Ages of 12 students (in years) are given below. Find the mean age.
      • 13
      • 10
      • 11
      • 12
      • 12
      • 13
      • 14
      • 15
      • 13
      • 12
      • 14
      • 14
  • (i)
    55

    4
    years
  • (ii)
    51

    4
    years
  • (iii)
    59

    4
    years
  • (iv)
    13
    years
  • (v)
    53

    4
    years
Question 2
2.
    • Ages of 30 students are given below. Find the mean.
    • Age (in years)
      10
      11
      12
      13
      14
      15
      No. of students
      7
      7
      1
      4
      9
      2
  • (i)
    367

    30
    years
  • (ii)
    397

    30
    years
  • (iii)
    427

    30
    years
  • (iv)
    184

    15
    years
  • (v)
    123

    10
    years
Question 3
3.
Read the given column-graph. Find the month that has maximum rainfall.
  • (i)
    July
  • (ii)
    September
  • (iii)
    June
  • (iv)
    November
  • (v)
    August
Question 4
4.
The total marks obtained by Ramu in his annual exam are 405 as shown below. Find the subject that has minimum score.
  • (i)
    Biology
  • (ii)
    English
  • (iii)
    Mathematics
  • (iv)
    Spanish
  • (v)
    Science
Question 5
5.
There are 760 creatures in a zoo. Find the type of creature that has 140 creatures presense in the zoo.
  • (i)
    Domestic animals
  • (ii)
    Water animals
  • (iii)
    Birds
  • (iv)
    Land animals
  • (v)
    Reptiles
Question 6
6.
Given the bar graph, find the minimum frequency
  • (i)
    40
  • (ii)
    30
  • (iii)
    35
  • (iv)
    25
  • (v)
    20
Question 7
7.
    • The following table gives the data regarding the favourite sport of 351 students of a school. Find the pie chart sector angle for "wrestling"
    • Sport
      basketball
      shotput
      football
      kabaddi
      high jump
      wrestling
      No. of students
      27
      81
      54
      90
      36
      63
  • (i)
    63.62°
  • (ii)
    66.62°
  • (iii)
    65.62°
  • (iv)
    62.62°
  • (v)
    64.62°
Question 8
8.
    • The scores obtained by 13 students in a test are given below. Find the range.
      • 16
      • 7
      • 1
      • 1
      • 5
      • 5
      • 7
      • 11
      • 2
      • 14
      • 16
      • 15
      • 16
  • (i)
    15
  • (ii)
    8
    12

    13
  • (iii)
    7
  • (iv)
    1
  • (v)
    16
Question 9
9.
    • If the mean of the following frequency distribution is
    • 8
      6

      29
    • ,
    • find the value of 'x'.
    • Value
      Frequency
      4
      4
      5
      2
      6
      3
      7
      3
      8
      5
      9
      3
      10
      x
      11
      1
      12
      6
      13
      1
  • (i)
    2
  • (ii)
    0
  • (iii)
    4
  • (iv)
    -1
  • (v)
    1
Question 10
10.
A survey of 1620 school students was done to know the preferred free time activity. Find the number of students who prefer "Watching TV".
  • (i)
    210
  • (ii)
    209
  • (iii)
    205
  • (iv)
    204
  • (v)
    207
Question 11
11.
Given below is a line graph showing the number of accidents in a city during the given months of a certain year. Identify the table for the given line graph.
  • (i)
    Month
    April
    October
    March
    May
    January
    August
    Number of accidents
    27
    38
    48
    39
    50
    32
  • (ii)
    Month
    April
    October
    March
    May
    January
    August
    Number of accidents
    27
    38
    48
    31
    56
    32
  • (iii)
    Month
    April
    October
    March
    May
    January
    August
    Number of accidents
    27
    46
    48
    31
    50
    32
  • (iv)
    Month
    April
    October
    March
    May
    January
    August
    Number of accidents
    27
    38
    40
    31
    50
    32
  • (v)
    Month
    April
    October
    March
    May
    January
    August
    Number of accidents
    27
    38
    48
    31
    50
    32
Question 12
12.
The marks obtained by Sunny in his annual exam are shown below. Find the subject that has minimum score.
  • (i)
    Telugu
  • (ii)
    Urdu
  • (iii)
    French
  • (iv)
    Biology
  • (v)
    Hindi
Question 13
13.
There are 1476 creatures in a zoo as shown in the bar graph. Identify the table for the given bar diagram.
  • (i)
    Type of Creatures
    Water animals
    Beast animals
    Wild animals
    Domestic animals
    Reptiles
    Land animals
    Birds
    No. of Creatures
    225
    234
    99
    135
    414
    207
    162
  • (ii)
    Type of Creatures
    Water animals
    Beast animals
    Wild animals
    Domestic animals
    Reptiles
    Land animals
    Birds
    No. of Creatures
    99
    225
    234
    207
    135
    162
    414
  • (iii)
    Type of Creatures
    Water animals
    Beast animals
    Wild animals
    Domestic animals
    Reptiles
    Land animals
    Birds
    No. of Creatures
    225
    162
    207
    99
    234
    135
    414
  • (iv)
    Type of Creatures
    Water animals
    Beast animals
    Wild animals
    Domestic animals
    Reptiles
    Land animals
    Birds
    No. of Creatures
    135
    162
    234
    225
    207
    414
    99
  • (v)
    Type of Creatures
    Water animals
    Beast animals
    Wild animals
    Domestic animals
    Reptiles
    Land animals
    Birds
    No. of Creatures
    162
    225
    414
    99
    234
    207
    135
Question 14
14.
    • The marks obtained by 11 students in a test are given below. Find the mean of their marks when the marks of each student is doubled.
      • 45
      • 1
      • 13
      • 16
      • 9
      • 30
      • 28
      • 21
      • 44
      • 26
      • 23
  • (i)
    604

    13
  • (ii)
    510

    11
  • (iii)
    514

    11
  • (iv)
    140

    3
  • (v)
    512

    11
Question 15
15.
    • The marks obtained by 15 students in a test are given below. Find their mean marks.
      • 20
      • 18
      • 9
      • 37
      • 40
      • 27
      • 37
      • 38
      • 35
      • 30
      • 7
      • 9
      • 1
      • 28
      • 6
  • (i)
    114

    5
  • (ii)
    112

    5
  • (iii)
    158

    7
  • (iv)
    116

    5
  • (v)
    70

    3
Question 16
16.
160 students of a school use different modes of travel to school. Identify the table for the given line graph.
  • (i)
    Mode of Travel
    Auto
    Bicycle
    Scooter
    Moped
    School Van
    RTC Bus
    No. of Students
    10
    28
    40
    50
    15
    25
  • (ii)
    Mode of Travel
    Auto
    Bicycle
    Scooter
    Moped
    School Van
    RTC Bus
    No. of Students
    10
    20
    40
    50
    23
    25
  • (iii)
    Mode of Travel
    Auto
    Bicycle
    Scooter
    Moped
    School Van
    RTC Bus
    No. of Students
    10
    20
    40
    50
    15
    25
  • (iv)
    Mode of Travel
    Auto
    Bicycle
    Scooter
    Moped
    School Van
    RTC Bus
    No. of Students
    10
    20
    40
    56
    15
    25
  • (v)
    Mode of Travel
    Auto
    Bicycle
    Scooter
    Moped
    School Van
    RTC Bus
    No. of Students
    10
    20
    48
    50
    15
    25
Question 17
17.
    • Scores of 30 students are given below. Find the mean.
    • Score
      70
      71
      74
      76
      77
      80
      81
      88
      89
      90
      No. of students
      1
      3
      1
      4
      1
      1
      2
      5
      3
      9
  • (i)
    2557

    30
  • (ii)
    2497

    30
  • (iii)
    833

    10
  • (iv)
    1249

    15
  • (v)
    2527

    30
Question 18
18.
The total marks obtained by Rajesh in his annual exam are 345 as shown below. Find the marks in "German".
  • (i)
    72
  • (ii)
    68
  • (iii)
    70
  • (iv)
    73
  • (v)
    67
Question 19
19.
    • The mean of the below random sample is
    • 22
      1

      2
    • .
    • Find the missing quantity.
      • 10
      • x
      • 16
      • 19
      • 39
      • 15
      • 14
      • 40
      • 10
      • 20
  • (i)
    40
  • (ii)
    41
  • (iii)
    43
  • (iv)
    44
  • (v)
    42
Question 20
20.
The total export earnings of ₹835 thousand crore of a country during five years is shown below. Find the year that has maximum export earnings.
  • (i)
    2008-09
  • (ii)
    2009-10
  • (iii)
    2006-07
  • (iv)
    2010-11
  • (v)
    2007-08
Question 21
21.
Students of a certain locality use different modes of travel to school as given below. Find the mode of travel that has 324 students.
  • (i)
    Scooter
  • (ii)
    School Van
  • (iii)
    Car
  • (iv)
    Moped
  • (v)
    Auto
Question 22
22.
360 students of a certain locality use different modes of travel to school as shown below. Find the number of students whose mode of travel is "By Foot".
  • (i)
    80
  • (ii)
    82
  • (iii)
    85
  • (iv)
    84
  • (v)
    79
Question 23
23.
Shown below is the total food grain production of 380 million tonnes over 5 years. Find the year that has minimum food grain production.
  • (i)
    2008
  • (ii)
    2011
  • (iii)
    2007
  • (iv)
    2010
  • (v)
    2009
Question 24
24.
Shown below is the total food grain production of 370 million tonnes over 5 years. Find the year that has maximum food grain production.
  • (i)
    2011
  • (ii)
    2010
  • (iii)
    2007
  • (iv)
    2008
  • (v)
    2009
Question 25
25.
Read the column-graph given below. Find the year that has maximum food grains production.
  • (i)
    2007
  • (ii)
    2010
  • (iii)
    2011
  • (iv)
    2009
  • (v)
    2008
    Assignment Key

  •  1) (ii)
  •  2) (i)
  •  3) (iv)
  •  4) (i)
  •  5) (i)
  •  6) (iv)
  •  7) (v)
  •  8) (i)
  •  9) (v)
  •  10) (v)
  •  11) (v)
  •  12) (i)
  •  13) (iv)
  •  14) (v)
  •  15) (i)
  •  16) (iii)
  •  17) (ii)
  •  18) (iii)
  •  19) (v)
  •  20) (iii)
  •  21) (iii)
  •  22) (ii)
  •  23) (v)
  •  24) (iv)
  •  25) (ii)