Tally Marks
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- frequency
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Question 29
Tally marks are used to find
(a) class intervals
(b) range
(c) frequency
(d) upper limit
The heights (in cm) of 30 students of class VIII are given below:
155, 158, 154, 158, 160, 148, 149, 150, 153, 159, 161, 148, 157, 153, 157, 162, 159, 151, 154, 156, 152, 156, 160, 152, 147, 155, 163, 155, 157, 153.
Prepare a frequency distribution table with 160-164 as one of the class intervals.
Construct a frequency distribution table for the data on weight in kg of 20 students of a class using intervals 30-35, 35-40 and so on.
40, 38, 33, 48, 60, 53, 31, 30, 59, 50, 39.
Thank you for answering my question.
The marks scored by 40 candidates in an examination (out of 100) is given below:
75, 65, 57, 50, 32, 54, 75, 67, 75, 88, 80, 42, 40, 41, 34, 78, 43, 61,
42, 46, 68, 52, 43, 49, 59, 49, 67, 34, 33, 87, 97, 47, 46, 54, 48, 45,
51, 47, 41, 43.
Prepare a frequency distribution table with the class size 10. Take the class intervals as (30 - 39), (40 - 49), … and answer the following question:
(a) Which class intervals have highest and lowest frequency?
(b) Write the upper and lower limits of the class interval 30-39.
(c) What is the range of he given distribution?