We ask if visual memory ability for a sample of 25 art majors (X = 49) is better than that for a population of engineering majors (m = 45 and = 14). Higher scores indicate a better memory. (a) What is the predicted relationship here? (b) Is this a one- or a two-tailed test? (c) In words, state H0 and Ha. (d) Compute zobt. (e) What is zcrit? (f) What do you conclude about differences in visual memory ability? (g) Report your results using the correct 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.
We ask if visual memory ability for a sample of 25 art majors (X = 49) is better than that for a population of engineering majors (m = 45 and = 14). Higher scores indicate a better memory.
(a) What is the predicted relationship here?
(b) Is this a one- or a two-tailed test?
(c) In words, state H0 and Ha.
(d) Compute zobt.
(e) What is zcrit?
(f) What do you conclude about differences in visual memory ability?
(g) Report your results using the correct format.
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