KIN 201 HW4

For a group of normally distributed scores with a mean of 30 and a standard deviation of 6, the middle 68% of the scores will be between

24-36

You are interested in predicting the number of goals an ice hockey player scores in a season based on the speed of this slap shot. You collect data from 150 players and construct a regression equation. You find that the slope = .45 intercept = 10.20 Using this information, calculate the number of goals an ice hockey player would score in a season if they had an 85 MPH slap shot

48.45

What is the median score for the following set of numbers? (3, 11, 8, 13, 5, 3, 6)

6

You test the correlation between fidelity to a physical activity intervention and cardiorespiratory gains and get the following results: r(75) = .69, p = .001. Which of the following do you conclude

The correlation is significant and of a large magnitude

In a random sample, participants are selected purposefully in order to meet necessary inclusion criteria (e.g., experts vs. non-experts, trained vs. untrained participants)

false

The standard deviation represents the single score that best expresses the group's performance

false

Which of the following is not a measure of central tendency

range

Four skills tests are tried as predictors of success in a tennis class. Each test correlates with later success as follows: test A, r = -.27; test B, r = .90; test C, r = -.40; test D, r = .65. The test that will most accurately predict success is

test B

In behavioral research, ⍺ is usually .05 or .01, but in medical research, it is often lower (⍺ = .001)

true

Regression can be used to both predict outcomes using independent variables and to examine the significance of predictor variables

true