Exam 15: Statistical Reasoning in Everyday Life

In research studies,psychologists use ________ to decide whether an observed difference between two groups is significant.

Evelyn wants to know how consistent her bowling scores have been during the past season.Which of the following measures would tell her what she wants to know?

The average scores of two samples taken from the same population are most likely to differ if

After his property was vandalized by a small group of teenagers,Mr.Mahmood concluded that most teenagers are irresponsible and delinquent.Mr.Mahmood ought to be reminded that accurate generalizations depend on

One person in a 10-person group is 10 times older than anyone else in the group.With respect to age,it is most likely that the majority of group members are younger than the group's

When Mr.Adams calculated his students' algebra test scores,he noticed that two students had extremely low scores.Which measure of central tendency is affected most by the scores of these two students?

Displaying data in a scatterplot can help us see the extent to which two variables are

The mode,median,and mean are most likely to have different values when they

Although Soren once scored 37 points during a single high school basketball game,he was subsequently unable to beat or match this record no matter how hard he tried.His experience may be at least partially explained in terms of

Professor Taylor arranged for people of different ages to complete a test of manual dexterity.She then compared manual dexterity across different age levels.The professor's research best illustrates a

Gamblers often throw dice gently for low numbers and hard for high numbers.This most directly illustrates

In a single day,45 babies were born in hospital X,65 babies in hospital Y,and 25 babies in hospital Z.At which hospital is there the greatest probability that more than 60 percent of the babies are of the same sex?

A 2010 U.S.Census report indicated that nearly 65 percent of U.S.households have "below average" income.In this instance,which measure was used to represent the average U.S.household income?

A graphed cluster of dots,each of which represents the values of two factors,is called a

To assess age-linked differences in self-esteem,researchers plan to give children from different age groups a test of self-esteem during the upcoming week.This research best illustrates

When an arithmetic average is reported in the news,it is most important for readers to

The most familiar measure of central tendency is the

Differences between two samples are LEAST likely to be statistically significant if the samples are _______ and the amount of variability in the samples is _______.

If a set of standardized test scores is normally distributed,having a mean of 75 and a standard deviation of 6,approximately 95 percent of the scores are somewhere between

A normal curve would approximate the distribution of