Weight of 30 students of a class (in kg) is as follows:
13,14,13.2,13.6,15,16,17,12,11.9,13,14,14.5,15.2,14,11.8,12.5,11.4,13,14,14.7,15.2,14,16,13,12.5,14.2,13.2,14,15.1,16.2
Present the data in a frequency table using one of the intervals as (14-16) .find the class interval,class size and class mark corresponding to the maximum frequency.also prepare a histogram.
Answers
Given : Weight of 30 students of a class
To Find : data in a frequency table using one of the intervals as (14-16).
Solution:
Class interval f Class Mark
10 - 12 3 11
12 - 14 10 13
14 - 16 13 15
16 - 18 4 17
Max frequency 13
for class interval 14 - 16
Class mark = 15
Class size = 16 - 14 = 2
Histogram
Histogram: a graphical display of data using bars of different heights. It is similar to a Bar Chart, but a histogram groups numbers into ranges
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