# Standard Deviation and Mean : Appication Word Problem - Phony Data?

Not what you're looking for? Search our solutions OR ask your own Custom question.

For any data set of n values with standard deviation s, every value must be within s âˆšn - 1 of the mean. A statistics teacher reports that the test scores in her class of 17 students had a mean of 75.0 and a standard deviation of 5.0. Kelly, the class's self-proclaimed best student, claims that she received a grade of 97. Could Kelly be telling the truth?

See the attached file.

Â© BrainMass Inc. brainmass.com November 30, 2021, 12:21 am ad1c9bdddfhttps://brainmass.com/math/algebra/standard-deviation-mean-phony-data-37329

#### Solution Preview

Please see the attached file for the complete solution.

Phony data? For any data set of n values with standard deviation s, every value must be within s âˆšn - 1 of the mean. A statistics teacher reports that the test scores in her ...

#### Solution Summary

Mean and standard deviation are applied to the validity of data. The solution is detailed and well presented.

$2.49