Chapter 3- Central Tendency

Question 0

Define:

Mean

Answer 0

The sum of the scores divided by the number of scores

Question 1

Define

Central Tendency

Answer 1

A statistical measure to determine a single score that defines the center of a distribution

Question 2

Define:

Median

Answer 2

The score that divides a distribution in half so that 50% of the individuals in the distribution have scores at or below the median

Question 3

Define:

Mode

Answer 3

The score or category that had the greatest frequency

Question 4

Describe mean and median in a symmetrical distribution.

Answer 4

Mean and median are the same value

If exactly one mode it has the same value

Question 5

Define:

Kurtosis

Answer 5

When the distribution is really wide or narrow

Question 6

Define:

Platykurtic

Answer 6

When you have a narrow distribution

Question 7

Define:

Mesokurtic

Answer 7

When you have a wide distribution

Question 8

Describe mean in a skewed distribution.

Answer 8

Influenced by an extreme scores is found far toward the long tail (positive or negative)

Question 9

Describe median in a skewed distribution.

Answer 9

The median is found toward the long tail but not as far as the mean

Question 10

Describe the mode in a skewed distribution.

Answer 10

Mode is found near the short tail

Question 11

Is it positive or negative?

Mean-Median>0

Answer 11

Positively skewed

Question 12

Is it positive or negative?

Mean-Median<0

Answer 12

Negatively skewed