Exam 3: Measures of Central Tendency and Variability

One problem with the sum of squares as a measure of variability is that its size depends on _____,as well as the variability among scores.

The interquartile range has been criticized because it does not take into account:

What statement below is TRUE in regards to a normal distribution?

Use of Greek notation implies that the parameters describe ____ characteristics.

The sum of squares takes into account all of the scores in a data set.

Briefly define the mode and identify its weakness as a measure of central tendency.

It has been reported the mean driving speed in California is 70 mph and the variance is 9.What is the SD?

_____ refers to the "average" score in a set of scores.

Briefly define the mean and its relation to deviation scores.

The _____ is the highest score minus the lowest score.

The more extreme a score is relative to the other scores in the distribution,the less it will change the value of the mean if it is deleted from the analysis.

When there is an even number of scores,the median is the _____.

The median _____ the sum of the _____ deviations.

Measures of Central tendency are an example of_____.

The interquartile range is sometimes preferred over the range because it

The mode is the most appropriate measure of central tendency when the scale of measurement used is

The _____ is simply the arithmetic average of a set of scores.

The median is the point in the distribution of scores that divides the distribution into two equal parts.

John waited an average of 5 minutes at a local Starbucks for his coffee with a SD of 2.00.On campus he waits 4 minutes for coffee with a SD of 3.00.What coffee vendor has more variability in its distribution of coffee?

The mean of a _____ skewed distribution will always be _____ than the median.