Exam 3: A Statistics Refresher

The distribution of scores from a "Citywide Math Test" scores results in a mean of 70 and a standard deviation of 12.Here,a score equal to 2 standard deviations above the mean would be:

Which of the following values could be a stanine score?

What is an advantage of T scores over z scores?

To calculate a Pearson r using one of the formulas presented in the text,it is necessary to know

If the mean of a distribution is 7 and the standard deviation is 2,what is the z score that is equivalent to a raw score of 3?

Measures of central tendency refer to which part of the frequency distribution?

A distribution of test scores is: 75,92,96,88,75,62,and 88.This distribution can be characterized as:

Which of the following is an advantage of the stanine score over other standard scores?

If few scores fall on the negative side of the distribution,the distribution is ________ skewed.

A difference between a ratio and an interval scale is that a ratio scale

If the calculated value of the correlation coefficient for two variables is 0,what would the resulting scatterplot look like?

A frequency distribution typically includes

Generally,which correlation coefficient best reflects the relationship between the number of calories consumed and body weight?

The T in T-scores came about because this variety of standard score was named after

What is the formula for the arithmetic mean as calculated from a frequency distribution?

If all scores in a set of test scores were the same,the variance would be equal to

A standard score obtained by a linear transformation is one in which

The nominal scale is a type of measurement that uses

In a distribution that is symmetrical,which of the following is true?

A normalized standard score scale is usually derived from a distribution that was previously