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?