How does this go from 6 to 13 10 to 19 Use the following to answer questions 65-

Question

How does this go from 6 to 13 10 to 19 Use the following to answer questions 65-69: You have just recorded the waiting times for a ran Elmo's Pizza Shop. The following table gives the frequency di minutes) for these customers. s who visited Oid Waiting Time f 10 lOto less than 16 196 301b 6 16-aal 7125 16 to less than 22 10 22 to less than 28 17 -28 28 to less than 28 17 32-37 25 4 ouS 9 28-3 28 to less than 34 9 34 to less than 40 7 40 to less than 46 1 ly3143-lisug_ toless than 46 1 yo-qull 65. The value of mf is: 66. The value of f is. 50 16 1271 35336

Explanation / Answer

The values 6,10,17,9,7,1 are the frequencies which are given for each class. It is shown under the column with heading f.

The next column with value 13, 19, 25, 31, 37, 43 are the mid range of each class. It is found by the formula (low value + high value)/2

For eg: take the class 10-16, applying the formula gives, (10 + 16)/2 = 13 which is the mid range.

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