Eric and Frank are medical coders doing inpatient records at a doctors’ clinic. The table shows the number of records processed by the two coders for 7 days. Based on the given data table, which of following is not a valid statement?
Three out of 7 days of Eric’s work were within 1 standard deviation from the mean.
The smaller standard deviation in Eric’s work shows more consistency than Frank’s work does.
For Frank’s work, the median is a better measure of central value than the mean is.
The bigger range in Frank’s work shows that he covered more work than Eric did.
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