Exam 11: Strategies for Analyzing Quantitative Data

Danzell is a purchasing agent for a major grocery store chain.He has noticed over the years that the higher the outdoor temperature, the more likely people are to buy fresh fruit.Based on Danzell's observations, we would say there is ______ relationship between outdoor temperature and buying of fresh fruit.

Statistical hypothesis testing involves testing the:

How are inferential statistics different from descriptive statistics?

Frank Fitness found a correlation coefficient of -.74 between hours of strenuous exercise each week and a standard measure of body mass.He interprets this to mean that there is a ______ and ______ relationship between hours of strenuous exercise and body mass.

Three of the following factors are associated with a relatively small standard error of the mean.Which one is NOT?

On the basis of statistical findings, Becky determines that the difference between males and females on a test of abstract mathematical reasoning is merely due to chance.If, in fact, there are gender differences in the population, Becky will have made a:

Note several steps researchers can take to optimize the power of their statistical tests.

When reporting growth data, the ______ is the most useful measure of central tendency.

____ are characteristics of samples, whereas _______ are characteristics of populations.

Dorothy has been surveying the Munchkins to determine their level of life satisfaction.The possible scores on the life satisfaction questionnaire range from 0 to 100.If Dorothy decides to statistically compare the male and female Munchkins on their level of satisfaction, she should use a _______ test.

After completing planned analyses, the researcher must interpret the results of statistical tests.Note several steps that are involved in such interpretation.

When summarizing ordinal data, the ______ is the most useful measure of central tendency.

Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3.The mean of this set of scores is ______.

Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3.The mode of this set of scores is ______.

In a normal distribution, what percentage of scores falls between one standard deviation below the mean and one standard deviation above the mean?

On the basis of statistical findings, Ron determines that the differences between males and females on a test of spatial reasoning are not due merely to chance.If, in fact, there are no gender differences in the population, Ron will have made a:

The z-score, or standard score, allows the research to determine:

Here is a set of scores: 5, 3, 7, 3, 6, 2, 5, 3.The median of this set of scores is ______.

The measure(s)of central tendency that is/are appropriate for use with nominal data is/are:

An exam was given to two sections of the same course.In Section 1, the exam mean was 51 and the standard deviation was 7.In Section 2, the exam mean was 51 and the standard deviation was 13.Which of the following conclusions is accurate?