What is the name of the largest professional/scientific society that is comprised entirely of i/o psychologists?

a. the society for industrial and organizational psychology
b. the american psychological society
c. the academy of management
d. the american psychological association

A. The Society for Industrial and Organizational Psychology

Explanation:

The Society for Industrial and Organizational Psychology (SIOP) is a professional organization that is concerned with promoting the science, practice, and teaching of industrial and organizational psychology.

A. R2 = 0.6724, meaning 67.24% of the total variation in test scores can be explained by the least‑squares regression line.

Step-by-step explanation:

John is predicting test scores of students on the basis of their home work averages and he get the following regression equation

y=0.2 x +82.

Here, dependent variable y is the test scores and independent variable x is home averages because test scores are predicted on the basis of home work averages.

The coefficient of determination R² indicates the explained variability of dependent variable due to its linear relationship with independent variable.

We are given that correlation coefficient r= 0.82.

coefficient of determination R²=0.82²=0.6724 or 67.24%.

Thus, we can say that 67.24% of total variability in test scores is explained by its linear relationship with homework averages.

Also, we can say that, R2 = 0.6724, meaning 67.24% of the total variation in test scores can be explained by the least‑squares regression line.