Question
The given table lists the frequency distribution of 24 observations. Some values are missing in the table.(i Class mark x)d=i ii0 -50 150 - 100 2100 - 150 3 0f f What is the mean of the data set?
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Text solutionVerified
(b): One has to fill the table first a = 125 = Class mark of interval (100 ? 150) 1f=1,21f=2=a+fd∑i150=131.25
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Question 2
In an experiment with 15 observations on x the following results were available : One observation, 20, was found to be wrong and was replaced by the correct value 30. Then the corrected variance is
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Question Text | The given table lists the frequency distribution of 24 observations. Some values are missing in the table.(i Class mark x)d=i ii0 -50 150 - 100 2100 - 150 3 0f f What is the mean of the data set? |
Answer Type | Text solution:1 |
Upvotes | 150 |