Tuesday

September 2, 2014

September 2, 2014

Posted by **LUA** on Saturday, January 19, 2013 at 1:03pm.

Are all yields obtained within one standard deviation of the mean?

- math standard deviation -
**PsyDAG**, Sunday, January 20, 2013 at 1:05pmFind the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

I'll let you do the calculations.

Without even calculating the SD, the answer is no. ±1 SD is only about 68% of the scores.

**Answer this Question**

**Related Questions**

math: standard deviation - Calculate the standard deviation for the following ...

statistics - A production process is considered to be out of control if the ...

college math - 20. Calculate the range, variance, and standard deviation of the ...

math - hi i need help calculating the standard error using the central limit ...

Statistics - 1) A Motor Company has purchased steel parts from a supplier for ...

Statistics - hi i need help calculating the standard error using the central ...

Statistics - data from sample of 400 cases, variable has 95% confidence interval...

Math - Roughly speaking, the standard deviation indicates how far, on average, ...

Statistics - Check my answers please! Thanks a lot. Five students reported that ...

Stastics - When we convert x-value to z- score and use Standard Normal ...