Chapter 2

number that appears the most often

what is the mode

Experimental Study

In a(n) __________, one or more variables are identified and controlled or manipulated so that data can be obtained about how they influence the variable of interest identified first.

Sample

Subset of the population

sample mean

The __________ is a point estimate of the population mean for the variable of interest.

box plot

Which of the following graphs provides information on outliers and IQR of a data set?

cross-sectional data

__________ are collected from several entities at the same point in time.

Random variable/ uncertain variable

quantity whose values are not known with certainty.

they are not linear related

If covariance between two variables is near 0, it implies that

z-score

A __________ determines how far a particular value is from the mean relative to the data set's standard deviation.

Variable

A characteristic or a quantity of interest that can take ondifferent values

Random Sampling

A sampling method to gather a representative sample of the population data

Observation

A set of values corresponding to a set of variables

frequency distribution

A summary of data that shows the number of observations in each of several nonoverlapping bins is called a(n)

Population

All elements of interest

Categorical Data

Data on which arithmetic operations cannot beperformed.

Quantitative Data

Data on which numeric and arithmetic operations,such as addition, subtraction, multiplication, and division, can beperformed

68%

For data having a bell-shaped distribution, approximately __________ percent of the data values will be within one standard deviation of the mean.

Variation

The difference in a variable measured over observations

variation

The difference in a variable measured over observations (time, customers, items, etc.) is known as

Data

The facts and figures collected, analyzed, and summarized forpresentation and interpretation

conditional formatting

When working with data sets in Excel, __________ can be used to automatically highlight cells that meet specified requirements.

sort and filter

When working with large spreadsheets with many rows of data, it can be helpful to __________ the data to better find, view, or manage subsets of data.

MODE.MULT

Which Excel command will return all modes when more than one mode exists?