Analyzing Survey Results and Data

The video tutorial covers the concept of categorical data, focusing on bar graphs and dot plots. It explains how to calculate percentages using bar graph data, with examples involving cartoon preferences. The tutorial also discusses vertical bar graphs with clothing preferences and introduces dot plots, comparing them to bar graphs.

What is the main focus of the introduction to categorical data?

• Learning about pie charts

• Understanding bar graphs and dot plots

• Learning about line graphs

• Understanding numerical data

How do you calculate the percentage of students who favored Donald Duck?

• Multiply the number of Donald Duck fans by the total number of students

• Subtract the number of Donald Duck fans from the total number of students

• Add the number of Donald Duck fans to the total number of students

• Divide the number of Donald Duck fans by the total number of students and multiply by 100

What percentage of students did not favor the Little Mermaid?

• 100%

• 75%

• 50%

• 25%

Which cartoon had 25% of the survey results?

• Donald Duck

• Mother Goose

• Tom and Jerry

• Little Mermaid

What is the percentage of children who did not favor Donald Duck?

• 81.8%

• 100%

• 18.2%

• 36%

In the survey of middle school girls, which piece of clothing was favored by 20% of the girls?

• Tank tops

• Skirts

• Slacks

• Dresses

How many girls were surveyed in the clothing preference study?

• 125

• 100

• 175

• 150

What is a dot plot?

• A pie chart with dots

• A scatter plot with dots

• A bar graph with dots instead of bars

• A type of line graph

In the dot plot example, how many people have two pets?

• Four

• Six

• Three

• Five

What is the key strategy when working with dot plots?

• Always start from zero

• Always use a ruler

• Cross off numbers to avoid double counting

• Use a calculator for accuracy