Exam 16: Statistical Reasoning in Everyday Life

Which of the following is NOT a measure of central tendency?

One can most accurately estimate a population mean if a sample is

Two students in an art class are at least 20 years older than the others. Which measure of variation of class members' ages is most affected by the ages of these two students?

A correlation coefficient

Which of the following correlations between self-esteem and body weight would enable you to most accurately predict body weight from knowledge of level of self-esteem?

A lopsided distribution of scores in which the mean is much larger than both the mode and median is said to be

To represent the correlation between two variables graphically, researchers often construct a

If IQ scores are normally distributed, having a mean of 100 and a standard deviation of 15, approximately what percentage of people have IQ scores somewhere between 70 and 130?

Illusory correlation refers to

During the last Central High School basketball game, the starting five players scored 11, 7, 21, 14, and 7 points, respectively. For this distribution of scores, the range is

Which of the following is true of the longitudinal method?

Students who score much higher on an exam than they usually do can reasonably anticipate ________ scores when they are retested?

A statistically significant difference between two sample groups is NOT likely to be

Statistical reasoning can help us to generalize correctly from a

To test for age differences in intelligence, at the beginning of the school year a researcher gave the same mathematics test to groups of children who were 8, 10, 12, and 14 years of age. This procedure best illustrates a

To understand the British newspaper headline "Income for 62% Is Below Average," it is necessary to appreciate the distinction between the ________ and the mean.

Approximately what percentage of the cases represented by the normal curve fall between -3 and +3 standard deviations from the mean?

Which statistic is the average amount by which the scores in a distribution vary from the average?

The most frequently occurring score in a distribution of scores is the

The arithmetic average of a distribution of scores is the