Fecundity of white-tail deer (fawn per doe) in northeastern Minnesota is apparen

Question

Fecundity of white-tail deer (fawn per doe) in northeastern Minnesota is apparently related to the sum of the previous three winter monthly snow accumulations. Consider the following figure:

1) What is/are the independent variable(s)?

                a) fawn per doe

b) snow accumulations

c) y = -0.06x + 1.28

d) cannot be determined

2) What is/are the dependent variable(s)?

                a) fawn per doe

b) snow accumulations

c) y = -0.06x + 1.28

d) cannot be determined

3) What is the most precise description of the relationship between fecundity and snow?

a) positive

b) negative

c) y = -0.06x + 1.28

d) there is no apparent relationship

4) Is this relationship (if any) statistically significant?       

a) yes, by a lot

b) yes, by a little

c) no

d) cannot be determined

5) What evidence did you use to determine your answer to the previous question?

a) y = -0.06x + 1.28

b) r2 = 0.81

c) p = 0.037

d) visual inspection of the data

6) An increase in snow accumulations of 1 m would have which of the following effects?

a) increase fecundity by 1.28 fawns

b) decrease fecundity by 0.06 fawns

c) decrease fecundity by 0.81 fawns

d) cannot be determined

7) The value 1.28 represents what in this example?        

a) independent variable

b) dependent variable

c) slope

d) intercept

8) Snow accumulations explains what percent of the variation in fecundity?

a) 1.28

b) 0.81

c) 81

d) 3.7

9) What is this type of statistical analysis called?

a) correlation

b) regression

c) t-test

d) ANOVA

10) What is the null hypothesis associated with this analysis?

a) means of x and y are equal

b) variances of x and y are equal

c) no association between x and y

d) slope of line y = bx + a is zero

y-0.06x + 1.28 p2 = 0.81 p 0.037 1.0 o 0.8 a 0.6 10 12 (a) Sum of 3 previous winter snow accumulations (m)

Explanation / Answer

1a) fawn per doe

2. b) snow accumulations

3. b negative.

4. b) yes, by a little

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