Hi

I have calculated some statistics using a spreadsheet program and
I have to compare three slopes of regression and their significance level in an energy species hypothesis..

-2.11
level of significance is 5%

-4.73
level of significance is 1%

-4.13
level of significance is 1%

Can anyone explain what answer is required ?

Thank you for your help ! much appreciated !!!!

G

Hello G! I can explain what you need to do to compare the three slopes of regression and their significance levels in your energy species hypothesis.

To compare the slopes of regression, you will need to consider the significance levels associated with each slope. The significance level indicates the threshold below which you can reject the null hypothesis.

In your case, you have three slopes of regression (-2.11, -4.73, and -4.13) and their respective significance levels (5%, 1%, and 1%). The first step is to determine the order of the slopes. Based on the values you provided, the order of the slopes from smallest to largest is as follows: -4.73, -4.13, -2.11.

Next, you need to compare the significance levels of the slopes. The significance level indicates the probability of observing the data if the null hypothesis is true. The lower the significance level, the stronger the evidence against the null hypothesis. In your case, you have a common significance level of 1% for both the second and third slopes, and a significance level of 5% for the first slope.

To determine which slopes are statistically significant, you compare the significance levels. The statistically significant slopes are those with a significance level below the chosen threshold.

Based on the information you provided, the first slope (-2.11) has a significance level of 5%. Since this is higher than the common significance level of 1%, it is not statistically significant at the 1% level.

However, both the second and third slopes (-4.73 and -4.13) have a significance level of 1%. Since this is below the chosen threshold, they are statistically significant at the 1% level.

In summary, based on the significance levels provided, the statistically significant slopes in your energy species hypothesis are -4.73 and -4.13 at the 1% significance level.

I hope this explanation helps! Let me know if you have any further questions.