STAT 121 Test 2 Questions Verified Answers
True or False: Statistical information is never misleading or misrepresented.
False
True or False: All statistical summaries and conclusions should be reported in context.
True
The shape of a graph only applies to
Quantitative data
Which graph is the best choice for categorical data?
Bar Graph
Which graph is the best choice for quantitative data?
Histogram
Graphs used to display quantitative data
Histogram, Stem Plot, Box Plot, Dot Plot
Graphs used to display categorical data
Bar Graph and Pie Chart
What type of data is a Scatter Plot used to display?
2 Variable Quantative
What type of data is a Two-Way Table used to display?
, 2 Variable Categorical
Mode
Most commonly occurring number
Mean
The average
Median
The number in the middle
Skewed Right
Mean > Median
Skewed Left
Median > Mean
Symmetric
Mean and Median will be about the same
Range
Max - Min
Symbol for mean
x̄
Standard Deviation (SD)
Average distance between a data point and the mean
True or False: SD is strongly influenced by outliers.
True
Which numerical summary is used for categorical data?
True or False: Statistical information is never misleading or misrepresented.
False
True or False: All statistical summaries and conclusions should be reported in context.
True
The shape of a graph only applies to
Quantitative data
Which graph is the best choice for categorical data?
Bar Graph
Which graph is the best choice for quantitative data?
Histogram
Graphs used to display quantitative data
Histogram, Stem Plot, Box Plot, Dot Plot
Graphs used to display categorical data
Bar Graph and Pie Chart
What type of data is a Scatter Plot used to display?
2 Variable Quantative
What type of data is a Two-Way Table used to display?
, 2 Variable Categorical
Mode
Most commonly occurring number
Mean
The average
Median
The number in the middle
Skewed Right
Mean > Median
Skewed Left
Median > Mean
Symmetric
Mean and Median will be about the same
Range
Max - Min
Symbol for mean
x̄
Standard Deviation (SD)
Average distance between a data point and the mean
True or False: SD is strongly influenced by outliers.
True
Which numerical summary is used for categorical data?
