Give reasons for 5 stars! Energy spent on reproduction constitutes an organism’s

Question

Give reasons for 5 stars!

Energy spent on reproduction constitutes an organism’s “reproductive effort”. The figure below shows the relationship between reproductive effort (number of cones produced) and annual growth (as measured by radial growth) for the Douglas fir, Pseudotsuga menzieii. The line represents the general trend as defined by least-squares linear regression: y = -1.70x + 107.5 (n = 32; r2 = 0.71; p = 0.008). Answer the following questions:

3. What is the most precise description of the relationship between reproductive effort and annual growth for the Douglas fir?

A) positive

B) negative

C) y = -1.70x + 107.5

D) there is no apparent relationship

4. What is this type of statistical analysis called?

A) correlation

B) regression

C) t-test

D) ANOVA

5. What is the null hypothesis associated with this type of statistical 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

6. Given the reported statistical results, would the null hypothesis/hypotheses be rejected with an ? = 0.05?

A) yes

B) yes for cone number, but not for ring width

C) yes for ring width, but not for cone number

D) no

Explanation / Answer

3.negative, as evident from the equation of regression that the slope is negative this shows the negative relation between them which means the correlation is inversely proportional i,e if one increase other will decrease

4 regression analysis. this second graph cleary depicts that. this is a graph of regression analysis in which values are being regressed to the line in the centre

5.option c is the right answer, the null hypothesis for regression analysis is p=0 i.e. no significant linear relation between variables

6.yes we reject null hypothesis and found that we can reject null hypothesis which in turn means there is significant relation between the two variables

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