Calculate the standard deviation of the following scores. Use the formula for the population standard deviation. You can find it in Keyton's online appendix to your test. Make sure that your answer goes out to two decimal places even if it is a round number (e.g., 4.00).

The scores for the variable X are below: 10 4 5 10 9 5 5 7 2 4

Consider the mean and standard deviation from the first question. Is the mean an accurate predictor or estimate of the scores in the sample? Why or why not?