Measures of Central Tendency Terminology

Question 1

Statistic is a

Answer 1

measure of a sample of observations.

Question 2

Population includes

Answer 2

all members of a specified group.

Question 3

Parameter is

Answer 3

when the statistic summarizes all possible observations of a population.

Question 4

Sample statistic (subset of the population) is…

Answer 4

A set of observations that is a subset of a population.

Question 5

Measure of central tendency specifies

Answer 5

where the data is centered.

Question 6

Measures of locations are quantitative measures that

Answer 6

describe the location or distribution of data. They include not only measures such as central tendency, but also percentiles and so on.

Question 7

Outlier is an

Answer 7

extreme value in observation that may indicate error or rare occurrences.

Question 8

There are several ideas on what to do with outliers when analyzing:

Answer 8

1 - Do nothing
But only in cases when the values are legitimate and correctly recorded.

2 - Delete all the outliers
At this point, the measure of central tendency is called the trimmed mean.

3 - Replace the outliers with another values
In this case, the measure of central tendency will be called winsorized mean.

Question 9

Winsorized mean is when…

Answer 9

Lowest (or highest) values were assigned to a one specific value.