Exam 3: Finding Relationships Among Variables

Approximate the percentage of these internet users who are women in the 30-43 age group.

The tables of counts that result from pivot tables are often called

Changing the location of fields in a pivot table is known as

A trend line on a scatterplot is a line or a curve that "fits" the scatter as well as possible.

Correlation is affected by the measurement scales applied to the X and Y variables.

If the standard deviations of X and Y are 15.5 and 10.8,respectively,and the covariance of X and Y is 128.8,then the correlation coefficient is approximately 0.77.

If the standard deviation of X is 15,the covariance of X and Y is 94.5,and the correlation is 0.90,then the variance of Y is 7.0.

A useful way of comparing the distribution of a numerical variable across categories of some categorical variable is with

One characteristic of "paired variables" is that

The advantage that correlation has over covariance is that correlation has a set lower and upper limit.

The filters field of a pivot table contains the data that you want summarized.

What percentage of these internet users has formal education beyond high school?

We can infer that there is a strong relationship between two numeric variables when the points on a scatterplot

Which of the following are considered numerical summary measures?

Approximate the percentage of these Internet users who are men under the age of 30.

Approximate the percentage of these internet users who are women.