SOLUTION: Please double check my work The Ph of a patients blood was measured periodically during one week, and the measured values were 7.37, 7.40, 7.45, 7.45, and 7.44. Find the standa

Question 171641This question is from textbook
: Please double check my work
The Ph of a patients blood was measured periodically during one week, and the measured values were 7.37, 7.40, 7.45, 7.45, and 7.44. Find the standard deviation and variance for the data. Round the results to the nearest thousandth.
I added 7.37 + 7.40 + 7.45 + 7.45 + 7.44 = 37.11
then I divided 37.11/ 5 and came up with the answer of 7.4222
Did I do this right? This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!

The Ph of a patients blood was measured periodically during one week, and the measured values were 7.37, 7.40, 7.45, 7.45, and 7.44. Find the standard deviation and variance for the data. Round the results to the nearest thousandth.
I added 7.37 + 7.40 + 7.45 + 7.45 + 7.44 = 37.11
then I divided 37.11/ 5 and came up with the answer of 7.4222
Did I do this right?
---------
That is the mean; you want the standard deviation (s) and the variance (s^2)
======================
Cheers,
Stan H.

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