Lesson 19: Comparing Populations with Friends | Unit 8: Probability and Sampling

Open Ended

An agent at an advertising agency asks a random sample of people how many episodes of a TV show they watch each day. The results are shown in the dot plot. What measure of center and measure of variation would the agent need to find for their current show to determine if there is a meaningful difference? Explain your reasoning.

Multiple Choice

An agent at an advertising agency asks a random sample of people how many episodes of a TV show they watch each day. The results are shown in the dot plot. What is the mode of the data in the dot plot?

• 2
• 3
• 0
• 1

Open Ended

An agent at an advertising agency asks a random sample of people how many episodes of a TV show they watch each day. The results are shown in the dot plot. What numbers for these characteristics would be meaningfully different if the measure of variability for the current show is similar? Explain your reasoning.

Multiple Choice

What about Jada’s data collection process might show that her dad is right?

• Jada's data collection is thorough and well-structured.
• Jada's dad has no influence on her data collection.
• Jada's data collection process is based on scientific methods.
• Jada's data collection may be biased or unstructured.

Open Ended

The mean weight for a sample of a certain kind of ring made from platinum is 8.21 grams. The mean weight for a sample of a certain kind of ring made from gold is 8.61 grams. Is there a meaningful difference in the weights of the two types of rings? Explain your reasoning.