Exam 15: Statistical Reasoning in Everyday Life

To provide a rough estimate of how similar or diverse a set of scores is,we should calculate the

Unusual ESP subjects who defy chance when first tested nearly always lose their "psychic powers" when retested.This decline is best explained in terms of

The maximum height of a normal curve corresponds to the ________ of a normal distribution.

Educational differences between people from different generations partially account for the apparent age-related decline in mental ability found in

To find whether observed differences between samples reflect actual differences between populations,you should determine the ________ of the observed differences.

If a set of standardized test scores is normally distributed,having a mean of 50 and a standard deviation of 10,approximately 68 percent of the group members receive scores somewhere between

As the size of a sample ________ ,the size of the standard deviation is most likely to ________ .

The ________ is a measure of ________.

Differences between two sample averages are most likely to be statistically significant if

Researchers studied the effects of vitamin supplements on the health of more than 600 city residents throughout their adulthood.This research procedure best illustrated

Faustin,a member of his school's golf team,has an opportunity to play against a nationally acclaimed professional golfer.How many holes of golf should Faustin choose to play with the professional in order to maximize his own slim chances of winning?

Professor Woo noticed that the distribution of her students' scores on the last biology test had an extremely small standard deviation.This indicates that the

Random samples provide ________ estimates of population averages if the scores from the samples have ________.

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?

Which measure of central tendency is used to calculate the average of your school grades?

Professor Chang displays the relationship between the height and weight measurements of more than 500 randomly selected people on a scatterplot.The points on the scatterplot are most likely clustered in a pattern that

The ________ is a measure of ________.

The symmetrical bell-shaped figure used to represent the distribution of many physical and psychological characteristics is called a

The precision with which a sample average approximates a population average increases as

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