Part 1 (5 Points): Measures of Central Tendency
For the first part of the assignment, you will focus on two variables: one continuous and one categorical (please refer to this week’s reading for the course text that describes these terms). Below you will find a few videos that will help you complete the lab assignment. If you need to recode your data for any reason (i.e., recode any missing values – please see to learn how to recode variables).
Use SPSS to find the mean, median, mode, and range of your continuous variable of interest. Create a histogram of the same variable. In your own words, explain what the mean, median, mode, and range represent. Please copy and paste your output table.
Create a bar graph for a categorical variable of interest (find one that has more than just 2 categories). What are the percentages for each group within your variable? Do you think the mean of your continuous variable will differ by group? If so, how? Please copy and paste your histogram.
Part 2 (5 Points): T-tests
For the next part of the assignment, you will focus on a continuous dependent variable (i.e., outcome) of interest and a dichotomous variable. Conduct a two-sample t-test (Independent t-test) between your variable of interest and some hypothesized mean value (this is subjective, but try to pick a value that could be meaningful). Explain the output in terms of:
What is the null hypothesis?
What is the alternative (or research) hypothesis?
What are the t test-statistic, degrees of freedom, and p-value?
What is your overall conclusion?
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