Analyzing Sleep and Activity Data

The video tutorial covers creating and analyzing dot plots using sleep data from sixth graders. It explains how to construct a dot plot, analyze the data for school and no school days, and use frequency tables to create data plots for sports activities. The tutorial emphasizes understanding data distribution and identifying central tendencies.

What statistical question did Robert investigate?

• How many hours do sixth graders spend on homework?

• How many hours per night do sixth graders usually sleep on school nights?

• What is the favorite subject of sixth graders?

• How many sixth graders have pets?

What is the first step Robert took to create his dot plot?

• He surveyed his classmates.

• He drew a number line and labeled it.

• He calculated the average sleep hours.

• He asked his teacher for help.

What is the most common number of hours slept according to Robert's data?

• 9 hours

• 10 hours

• 8 hours

• 7 hours

What is the range of hours of sleep on school nights according to the survey?

• 8 to 9 hours

• 7 to 10 hours

• 5 to 12 hours

• 6 to 11 hours

How does the center of the data differ between school nights and non-school nights?

• There is no center on non-school nights.

• The center is lower on non-school nights.

• The center is higher on non-school nights.

• The center is the same for both.

What is the least number of hours slept on non-school nights?

• 6 hours

• 7 hours

• 5 hours

• 4 hours

What new statistical question did the sixth graders investigate in Example Two?

• How many hours do sixth graders spend playing video games?

• How many hours do sixth graders spend reading?

• How many hours do sixth graders spend watching TV?

• How many hours per week do sixth graders spend playing a sport or an outdoor game?

What is the purpose of a frequency table?

• To compare data from different sources.

• To calculate the average of the data.

• To list possible data values and how often each occurs.

• To create a pie chart.

What is the most frequent range of hours spent playing sports or games outdoors?

• 0 to 2 hours

• 2 to 4 hours

• 6 to 8 hours

• 4 to 6 hours

How many sixth graders reported spending 8 or more hours playing sports or outdoors?

• 4

• 3

• 2

• 1