100 schools decided to plant 100 tree saplings in their gardens on world environment
day. Represent the given data in the form of frequency distribution table. Use tally
marks to get the frequency.
95, 67, 28, 32, 65, 65, 69, 33, 99, 96, 76, 42, 32, 38, 42, 20, 40, 69, 95, 92, 75, 83, 76, 83,
85, 62, 37, 65, 63, 42, 89, 65, 73, 81, 49, 52, 64, 76, 83, 92, 93, 68, 52, 79, 81, 83, 59, 82,
75, 82, 86, 90, 44, 62, 31, 36, 38, 42, 39, 83, 87, 56, 58, 23, 35, 76, 83, 85, 30, 68, 69, 83,
86, 43, 45, 39, 83, 75, 66, 83, 92, 75, 89, 66, 91, 27, 88, 89, 93, 42, 53, 69, 90, 55, 66, 49,
52, 83, 34, 36
Find the following.
a. Range
b. K or no. of classes
c. Class size
d. LB /UB
e. Class mark or midpoint
f. <CF
g. >CF
h. Measures of central tendency such as mean, median and mode
i. Measures of dispersion such as variance and standard deviation
