Probs & Stats Unit 2 Review

What is a contingency table used for?

• To display the distribution of cases in two variables

• To calculate the mean of a dataset

• To show the relationship between three variables

• To find the median of a dataset

What is another name for a contingency table?

• Frequency table

• Two-way table

• Pie chart

• Histogram

What is the term for the value in each inner cell of a contingency table?

• Marginal frequency

• Joint frequency

• Conditional frequency

• Total frequency

What do you call the totals in the margins of a contingency table?

• Joint frequencies

• Marginal frequencies

• Conditional frequencies

• Relative frequencies

How do you calculate joint relative frequencies in a contingency table?

• Divide each cell frequency by the total

• Multiply each cell frequency by the total

• Add each cell frequency to the total

• Subtract each cell frequency from the total

What percentage of European cars were owned by staff?

• 50.47%

• 41.37%

• 27.66%

• 54.55%

What is a side-by-side bar graph used for?

• Displaying the distribution of two categorical variables

• Displaying the distribution of a single variable

• Displaying only numerical data

• Displaying time series data

What is necessary between bars in a side-by-side bar graph?

• Overlapping bars

• A space between bars of different categories

• Bars of the same color

• Bars of different heights

What does a segmented bar graph display?

• Joint frequencies

• Conditional distribution of one variable within each category of another

• Time series data

• Numerical data only

In a segmented bar graph, what should the total percentage add up to?

• 50%

• 75%

• 100%

• 150%