Relative Frequency and Survey Analysis

The video tutorial explains how to calculate relative frequencies using contingency tables. It begins with an introduction to contingency tables and their use in displaying survey data. The tutorial then demonstrates how to calculate the relative frequency of non-registered voters who prefer radio, followed by a similar calculation for those who prefer the internet. Finally, it covers calculating the relative frequency of urban residents without a college degree. The video emphasizes the importance of identifying the correct sample group and setting up fractions to determine relative frequencies.

What is the primary focus of a contingency table?

• To display data and identify relationships

• To calculate averages

• To list all survey participants

• To predict future trends

In the given problem, how many adults were surveyed?

• 320

• 200

• 260

• 300

What is the relative frequency of radio listeners who are not registered voters?

• 0.57

• 0.27

• 0.37

• 0.47

How do you calculate the relative frequency of a group?

• Subtract the group number from the total

• Divide the total number by the group number

• Divide the group number by the total number

• Multiply the group number by the total

What percentage of the surveyed adults preferred the internet as their information source?

• 21%

• 37%

• 27%

• 31%

In the new dataset, what is the focus of the analysis?

• All residents with any degree

• Suburban residents with high school diplomas

• Urban residents without college degrees

• Rural residents with college degrees

How many urban residents without a college degree were surveyed?

• 47

• 57

• 67

• 77

What is the relative frequency of urban residents without a college degree?

• 0.47

• 0.37

• 0.57

• 0.27