1.) You collect some data in order to test your research hypothesis that childre
ID: 3174373 • Letter: 1
Question
1.) You collect some data in order to test your research hypothesis that children enrolled in charter schools experience higher rates of psychological distress than children enrolled in public schools. What is your null hypothesis?
2.)Which of the following is best described as a categorical variable?
D. Temperature
3.)Which of the following is best described as an ordinal variable?
D. Country of origin
4.)After collecting data on a sample of adults, you calculate a Pearson correlation between miles walked per day and income. You find that r = -.76. Which of the following must be true of your sample?
5.)A surveyor is determined to interview homeowners in south Philadelphia in order to assess voter opinions on key pieces of legislation. Suppose the surveyor first collects a list of eligible voters from the county and separates that list into four groups based on annual income. Then, the surveyor randomly selects 20 households to contact within each income group.
What sampling method is the surveyor using here?
D. Temperature
3.)Which of the following is best described as an ordinal variable?
A. Body Mass Index (BMI) B. Level of education C. TemperatureD. Country of origin
4.)After collecting data on a sample of adults, you calculate a Pearson correlation between miles walked per day and income. You find that r = -.76. Which of the following must be true of your sample?
A. People who walked more tended to earn less money. B. People who walked more tended to earn more money. C. People who walked less tended to earn less money. D. There was very little relationship between distance walked and income in the sample.5.)A surveyor is determined to interview homeowners in south Philadelphia in order to assess voter opinions on key pieces of legislation. Suppose the surveyor first collects a list of eligible voters from the county and separates that list into four groups based on annual income. Then, the surveyor randomly selects 20 households to contact within each income group.
What sampling method is the surveyor using here?
Explanation / Answer
1. H0: children enrolled in charter schools experiene same rates of psychological distress than children enrolled in public schools.
2.In statistics, a categorical variable is a variable that can take on one of a limited, and usually fixed, number of possible values, assigning each individual or other unit of observation to a particular group or nominal category on the basis of some qualitative property.
Country of origin
3. An ordinal variable is similar to a categorical variable. The difference between the two is that there is a clear ordering of the variables.
Level of education
4. This is negative correlation so
A. People who walked more tended to earn less money.Related Questions
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