a. Use the four steps of hypothesis testing and calculate a Pearson correlation for the above data, starting with the hypotheses. b. Find critical value at an alpha level at α=.05, two tailed. c. Include the coefficient of determination with a sentence explaining the outcome of both calculations in APA format.
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
A researcher wanted to know if there was a
| Number of brain injury | Depression Score |
| 0 | 1 |
| 9 | 10 |
| 4 | 7 |
| 7 | 8 |
| 2 | 1 |
| 1 | 0 |
| 8 | 10 |
| 5 | 5 |
| 0 | 2 |
| 4 | 6 |
a. Use the four steps of hypothesis testing and calculate a Pearson correlation for the above data, starting with the hypotheses.
b. Find critical value at an alpha level at α=.05, two tailed.
c. Include the coefficient of determination with a sentence explaining the outcome of both calculations in APA format.
d. Create a scatter plot by hand of the above data set.
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