Deck 6: Central Tendency

Question 1

Data cleaning follows data input, which follows data coding.

Answer 1

True

Question 2

Univariate analysis is the study of two or more variables.

Answer 2

False

Question 3

Univariate, descriptive statistics are sometimes also called summary statistics.

Answer 3

True

Question 4

Data coding is the process of preparing data for input into statistical software programs.

Question 5

Data input is the process of identifying and removing reporting and recording errors.

Question 6

It is common practice to assume that unexamined data usually contain various errors that must be identified and removed.

Question 7

Summary statistics are used to highlight important features about unusual observations.

Question 8

The mean is often used when analyzing continuous variables.

Question 9

The mean and median should never be reported at the same time.

Question 10

The mean is a commonly used statistic involving nominal variables.

Question 11

The mean is defined as the sum of a series of observations, divided by the number of observations of an array.

Question 12

When data are missing, a common practice is to estimate their values and include them in data analysis.

Question 13

Problems pertaining to the data can complicate calculations of the mean.

Question 14

The median should always be used when a few very large or very small values affect estimates of the mean.

Question 15

The location of the median is half the distance from the observation with the average value.

Question 16

Examples of the median are common in demographic studies of income.

Question 17

The mode is defined as the most frequent (typical) value(s) of a variable.

Question 18

The mode is used with nominal-level data.