Probability and Statistics Organizing Data

The standard deviation should not be used to measure spread when

Which graph should be used to show the change in the cost of college tuition over time.

Which should NOT be used to make a correct graph of the distribution of students by class:

An example of a categorical variable is

________________ are the most effective way to communicate using data.  

The standard deviation is a measure of

The possible values of a standard deviation of a set of observations can be

If 30 is added to every number on a list, the only one of the following that is NOT changed is:

The box in each boxplot marks

The Distribution of a variable tells us which of the following? 

Fifty percent of the observation will be at or above the:

For a distribution that is skewed to the right, usually

The median salary of full time professors is $100,000.  The mean would be:

The classes for a histogram should have equal:

You calculate that the standard deviation of a set of observations is 0.  This tells you that

An Outlier will usually have a large effect on the

Which of the following is less affected by extreme observations:

When creating graphs, you should NOT do which of the following

The most common graph of the distribution of a quantitative variable is a 

The five number summary consists of