# CBSE Class 11 Economics On Range and Quartile Deviation Worksheet

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Worksheet on Range and Quartile Deviation

a. Define deviation

b. What does Range mean?

c. State formula of coefficient of Range.

d. State any two demerits of Range.

e. What is interquartile range?

f. What is the other name for semi interquartile range?

II. Calculate Range and coefficient of range for the following.

a.   X: 52 19 18 21 22 45 23 27 37 30 31 42

b.   X: 6       6      7      8     9      10     11    12   13
F: 10    15    17    30    25     20     10      4      2

c.      Classes: 5-10    10-15    15-20    20-25    25-30    30-35    35-40   40-45
Frequency:   8          16         14         10          3           1          2          2

III. Calculate and quartile range, quartile deviation and its coefficient.

1.        Value: 58    59    60    61    62    63    64    65    66
Frequency:   2     3      6    15    10      5      4      3      1

2. Calculate quartile deviation

Classes: 50-60    60-70    70-80    80-90    90-100
Frequency:   11         17         32         28          12

3. Less than:    10    20    30    40    50    60    70
Frequency:      5     8     15    20    30    33    35

IV. Calculate Quartile deviation and its coefficient for the following.

1. 15   48   35   17   19   25   30

2.     Classes: 0-10    10-20    20-30    30-40    40-50    50-60    60-70    70-80
Frequency:  4           6           8          10         8           6           5          3

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