Histograms and Descriptive Statistics
Your first IBM SPPS assignment includes two sections in which you will:
Key Details and Instructions
Section 1: Histograms and Visual Interpretation
Section 1 will include one histogram of total scores for all the males in the data set, and one histogram of total scores for all the females in the data set.
Using the total and gender variables in your grades.sav data set, create two histograms:
Copy the histogram output from SPSS and paste it into a Word document. Below the histograms in your Word document, provide an interpretation based on your visual inspection. Correctly use all of the following terms in your discussion:
Comment on any differences between males and females regarding their total scores. Analyze the strengths and limitations of visually interpreting histograms.
Section 2: Calculate and Interpret Measures of Central Tendency and Dispersion
Using the grades.sav file, compute descriptive statistics, including mean, standard deviation, skewness, and kurtosis for the following variables:
Copy the descriptives output from SPSS and paste it into your Word document. Below the descriptives output table in your Word document:
For all meaningful variables, report and interpret the descriptive statistics (mean, standard deviation, skewness, and kurtosis).
Unit 4 D1
Applying Hypothesis Testing
For this discussion, answer the following questions:
Then articulate a null hypothesis and alternative hypothesis for a research study that pertains to your area of specialization.
What conclusions can be drawn from this study with a “statistically significant” result?
Unit 5 D1
Correlation Versus Causation
If correlation does not imply causation, what does it imply? Are there ever any circumstances when a correlation can be interpreted as evidence for a causal connection between two variables? If yes, what circumstances?
Unit 5 D2
A meta-analysis (Anderson & Bushman, 2001) reported that the average correlation between time spent playing video games ( X) and engaging in aggressive behavior ( Y) in a set of 21 well-controlled experimental studies was .19. This correlation was judged to be statistically significant. In your own words, what can you say about the nature of the relationship?
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