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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? |
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Answer» 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? |
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