Question

A researcher needs find out the weighted mean when she is trying to figure out the average score for two unequal samples.

T or F

When a data set has a large outlier which of the following measures of central tendency is most appropriate?

a. outliers have no effect on central tendency

b. mode

c. median

d. mean

Researchers calculate Central Tendency when they are looking to find the most representative score out of the entire distribution. While there are several methods of finding Central Tendency, each one depends on the data being looked at and not one measure works for all types of data.

T or F

Which of the measures of central tendency is most appropriate to use when dealing with data that has low variability (clusters close together), no outliers, and is either interval or ratio data?

a. any

b. median

c. mean

d. mode

What measure of central tendency is most appropriate to use when using nominal data?

a. any

b. medial

c. mean

d. mode

Answer 1

1. True, Since for unequal samples, one would have to assign different weights, thus, weighted mean is appropriate here.

2. For data having outliers, median is the most appropriate, since it does not depend on the extreme values.

3. True; different types of data require different approach.

4. When dealing with such type of data, ANY measure would suffice.

5. Mode is the most appropriate measure when dealing with nominal data.