Homework Help: statistics

Posted by Tracer on Saturday, February 6, 2010 at 6:05pm.

A sample of n = 20 scores has a mean of M = 6. If one new person with a score of X = 27 is added to the sample, what will be the value for the new mean?

statistics - PsyDAG, Sunday, February 7, 2010 at 10:56am
Mean = Σx/n

6 = Σx/20

Σx = 120

new Σx = 120 + 27 and new n = 21

Use the above equation to calculate new mean.

Answer this Question

Related Questions

statistics - A sample of n = 9 scores has a mean of M _ 10. One person with a ...
statistics - -A set of seven scores has a mean of 10. If one of the scores is ...
Statistics - One sample of n=20 scores has a mean of M=50. A second sample of n=...
Math - A sample of n _ 11 scores has a mean of M _ 4. One person with a score of...
Statistics - For a population with a mean of (mew) = 50 and a standard deviation...
statistics - 1) A scale measuring prejudice has been administered to a large ...
statistics - A student was asked to compute the mean and standard deviation for ...
statistics - a distribution of scores has 6, but the value of the mean is ...
statistics - A population of N=8 scores has a mean of µ = 20. If one score...
statistics - A population of N=8 scores has a mean of µ = 20. If one score...

For Further Reading

First Name:
School Subject:
Answer: