Chapter 2 Quiz

The simplest measure of variability is the

range

Data collected from several entities over a period of time (minutes, hours, days, etc.) are called

time series data

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

variation

the goal regarding using an appropriate number of bins is to show the

variation data

What is the mode of the data set given below? 35, 47, 65, 47, 22

47

A sample of 13 adult males' heights are listed below 70, 72, 71, 70, 69, 73, 69, 68, 70, 71, 74

7

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

MODE.MULT

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

conditional formatting

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

cross-sectional data

A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the service. Who makes up the population?

All customers who use the drive-thru window of this fast food restaurant

In a survey of patients in a local hospital, 62.42% of the respondents indicated that the health care providers needed to spend more time with each patient. Who makes up the population?

All patients in the local hospital

In a survey of patients in a local hospital, 62.42% of the respondents indicated that the health care providers needed to spend more time with each patient. Who makes up the sample?

All survey respondents

A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the service. Who makes up the sample?

All the survey respondents

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

Box plot

Which of the following relationships would have a negative correlation coefficient?

Supply and demand

The correlation coefficient will always take values

between -1 and +1

The letter grades (A, B, C, D, F) of business analysis students are recorded by a professor. This variable's classification

is categorical data

Which of the following are necessary to be determined to define the classes for a frequency distribution with quantitive data?

number of nonoverlapping bins, width of each bin, and bin limits

A set of values corresponding to a set of variables is defined as a(n)

observation

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

sample mean

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.

sort and filter

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

the variables are not linearly related