Exam 6: Central Tendency

The mean is often used when analyzing continuous variables.

The mean is a commonly used statistic involving nominal variables.

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

The mode is used with nominal-level data.

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

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

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

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

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

Univariate, descriptive statistics are sometimes also called summary statistics.

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

Univariate analysis is the study of two or more variables.

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

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

Data cleaning follows data input, which follows data coding.

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

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

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