Warm Up I can determine how best to collect data 1. 2.

Homework Questions

Imagine you wanted to answer the question: “Is there a relationship between amount of physical activity a person gets and their perceived stress level?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “What is the mean 2009 SAT math score for the state of Arizona? Is it higher than the corresponding score for West Virginia?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “What percentage of high school students would be willing to donate $10 or an hour of time to help a local food bank?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “What is the average weight of backpacks carried on college campuses? Is it different than the average weight of backpack in high schools?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “Would wearing neckties increase standardized test scores for boys in middle school?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “What is the average number of absences for the freshman class at Grant HS?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “What proportion of refurbished cells phones are defective?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “How much cholesterol is in a chicken egg?” How could you gather data to answer this question?

Imagine you wanted to answer the question: “Do seniors at Grant do less homework than sophomores?” How could you gather data to answer this question?

Survey – Collects data from a subset (sample) of the population Statistics – Numerical summaries from a sample Census – Collects data from an entire population Parameters – Numerical summaries from a population

Revisit the questions from earlier. For each question, determine if you would use Sample Statistics or Census Parameters

Imagine you wanted to answer the question: “Is there a relationship between amount of physical activity a person gets and their perceived stress level?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “What is the mean 2009 SAT math score for the state of Arizona? Is it higher than the corresponding score for West Virginia?” How could you gather data to answer this question? Census Parameters

Imagine you wanted to answer the question: “What percentage of high school students would be willing to donate $10 or an hour of time to help a local food bank?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “What is the average weight of backpacks carried on college campuses? Is it different than the average weight of backpack in high schools?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “Would wearing neckties increase standardized test scores for boys in middle school?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “What is the average number of absences for the freshman class at Grant HS?” How could you gather data to answer this question? Census Parameters

Imagine you wanted to answer the question: “What proportion of refurbished cells phones are defective?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “How much cholesterol is in a chicken egg?” How could you gather data to answer this question? Sample Statistics

Imagine you wanted to answer the question: “Do seniors at Grant do less homework than sophomores?” How could you gather data to answer this question? Sample Statistics or Census Parameters

Worksheet (do both sides!)