50 (c) 6 34 (d) 20 20 What are the approximate numbers of participa owing planned studies to have 80% power, assu and all using the .05 significance level? groups per of participants needed, not just the number n Expected Tails 1 W12 (a) 25 10 1 15 b) 25 1 10 30 30 40 1 (c) 10 2 15 25 10 (d) Greengross and colleagues (2012) compared 31 sample of 400 college students on a number of fac measured using a test of verbal intelligence) an captions for cartoons. The participants were given ions for three cartoons and the captions were then by six judges. As shown in Table 8-11), the resea ent means to compare the scores of the comedia six different measures: their vocabulary, the num Comparisons and Effect Sizes Between Pro on the Vocabulary Test and Humor Product Captioning Task able 8-11 Comedians Students
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.
what are the appropriate numbers of participants needed for each of the folowing planned studies to have 80% power assuming equal numbers in the two grups and alll using the .05 significance level? (be sure to give the total number of participants needed not just the number needed for each group.
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