Homework Answers
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a. Change of units, or conversion factor ( like treating height in inches instead of cm), or multiplying the whole column by a positive constant will not effect the correlation.
Here we just take the variable in different units, case as above.
Hence, correlation is not going to change.
Answer: A) 0.40
b. D) is correct.
You can 't calcualate r for a categorical variable and a continous variable, that' impossible.
Answer: D) is correct
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(4 points) For each problem, select the best response. (a) For a biology project, you measure...
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consider Question 8 (0.1 points) Consider any two events A and B, such that P(A) =...
consider
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The Quantitative Environmental Learning Project reported widths and lengths (in centimeters) of a sample of 88...
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consider
Question 8 (0.1 points) Consider any two events A and B, such that P(A) = 0 and PB) +0. Which of the following statements is always FALSE? a) If events A and B are independent, then P(AB) = PA) and P BIA) - PB). b) If events A and B are disjoint, then PA and B) - 0. c) If events A and B are independent, then P{A and B) - 0. d) If events A and B are...
For each problem, select the best response. (a) The points on a scatterplot lie close to the line whose equation is y = 2x – 8. The slope of the line is O A. -2 o B. 10 o C. 8 D. 2 E. None of the above. (b) Smokers don't live as long (on the average) as nonsmokers, and heavy smokers don't live as long as light smokers. You regress the age at death of a group of male...
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7231/assignments/295420?module item_id- 1084344 (1 point) For each problem, select the best response. (1) Fred keeps his savings in his mattress. He began with $650 trom his mother and adds $100 each year His total savings y after r years are given by the equation OA. y 650 100z OB.y 650+100 Oc. y-100+650z OD. y 100+ O E. None of the above. (2) Smokers don't live as long (on the average) as nonsmokers, and heavy smokers don't live as long as...
Select the BEST answer for each of the questions below (I true, F- false). Cirele the letter that corresponds with the answer you have selected. Each question is worth 2 points. [Total 40 points) Answer uestion E1. Power is the ability to reject the null hypothesis when it should be rejected 2. With curvilinear data, the Pearson r statistic is an appropriate, accurate statistical tool In a research report, the term statistically significant is used to indicate that the null...
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