Type of study Guides 1a 1b 2a 2b 3a 3b 4a 4b Angles 400 500

Type of study Guides

1a

1b

2a

2b

3a

3b

4a

4b

Angles

400

500

400

500

400

500

400

500

proofs

1200

1500

1200

1500

1200

1500

1200

1500

triangles

400

500

400

500

400

500

400

500

Using the contingency table for the problems.

A) The total sale amounts for each entire marking period (start, end) is a population.

B)A= 0.05

c) µ= Mar Per (Start/End) Sales Total

1. Do a rank correlation, tell us how the realuts affect the sales prections

Ho: ps= 0

H1: ps 0

Solution

use EXCEL to calculate the corealtion value

It is important to realize that statistical significance does not indicate the strength of the Spearman rank-order correlation. In fact, the statistical significance testing of the Spearman correlation does not provide you with any information about the strength of the relationship. Thus, achieving a value of p = 0.001, for example, does not mean that the relationship is stronger than if you achieved a value of p = 0.04. This is because the significance test is investigating whether you can reject or fail to reject the null hypothesis. If you set = 0.05, achieving a statistically significant Spearman rank-order correlation means that you can be sure that there is less than a 5% chance that the strength of the relationship you found (your rho coefficient) happened by chance if the null hypothesis were true.