Exam 16: Understanding Measures of Central Tendency and Distribution Skewness in Statistical Analysis

Discuss where the placement of the mean, median, and mode fall on a graph that depicts a normal, a positively skewed, and a negatively skewed distribution. Be sure to describe why.

The median is typically the BEST choice for a measure of central tendency when:

In a positively skewed distribution, the mean is _____ the mode.

In descriptive research, it is important to describe the main characteristic of your population with _____ number(s).

If Jude wanted to find the median of a group of numbers, he would:

A psychological researcher would use a measure of _____ to determine one number that represents how much time college students tend to spend studying per week during the school year.

The mean is defined as the:

Which list has the lowest variability?

Which list contains an outlier?

Indri's study reached statistical significance. She can now conclude that her data set:

In a _____ distribution, the mean can be a misleading measure of central tendency.

The _____ is the number that falls at the midpoint in a group of numbers listed in order.

A _____ skewed distribution is said to be skewed to the right.

An outlier is defined as a(n):

_____ is a rather sophisticated measure of the variability around a mean.

A p value of 0.05 means that there is a _____ percent chance the result is occurring due to chance.

Measures of _____ describe the degree to which numbers in a group differ from the mean.

If the results of a study reach _____ significance, it can be said that the hypothesis was supported.

Vinay is timing how fast he can run a 100-meter dash. So far, he has times of 11.5, 11.8, 12.3, 13.2, and 13.2 seconds. What is Vinay's median time thus far?

A _____ distribution is also called a bell curve.