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Frequency Distributions For the variable earnrs what is the valid N? ____________ What is the most common answer for the variable earnrs? ______________ What percent of the sample indicate they have 4 family members who earn money? ______________ What percent of the sample have 2 or fewer family members earning money? ______________ What percent of the sample have 4 or more family members earning money? ______________ Central Tendency For the variable hompop find the following Valid N. _________ Mean _________ Median _________ Mode _________ Min. _________ Max. _________ Standard Deviation _________ Judging from the values of the mean and median, which way will the distribution of the variable hompop be skewed? __________________ Levels of Measurement Identify if the following variables are Ordinal, Nominal, or Interval Ratio wrkstat ________________________ earnrs ________________________ wealth _________________________ happy ________________________ tvhours ________________________ sibs ___________________________ T-Tests Run a One-Sample T-Test for the variable tvhours. Let’s say you hypothesize that on average, Americans will watch less than 5 hours of TV per day. Fill out the following information’ N _________ T-statistic _________ degrees of freedom _________ level of significance _________ Mean _________ Standard Deviation ____________ Thinking about your hypothesis, what can you conclude about the number of hours people spend watching TV? Cross-Tabs and Chi Squares Run a cross-tab and chi-square with the two variables conjudge and natroad (natroad will be the dependent variable). Ask for the chi square statistic, the gamma, and Kramer’s V. Depict your hypothesis as a causal diagram (use boxes and arrows) and explain your reasoning below Is there a relationship between these two variables? What is the strength and maximum difference? What is the direction of the relationship? Report the Chi-Square statistic _________ Report the Degrees of freedom _________ What is the significance reported in the output? _________ Report the Gamma_________ Report Cramer’s V_________ Graphs Create a Pie chart for the variable wealth What is the mode for the variable wealth? ___________ What percent of people fall into the category of $100,000 to $150,000? _______________ Create a clustered bar chart for the variable happy and define the clusters by sex For the category “pretty happy,” did males or females report a greater number? _________________ What percent of females reported being “not too happy”? _________ Regression Create a regression model for the two variables age and weekswrk (weekswrk is the DV) Report the R-Square value? __________ About what percent of the variation in weeks worked does age explain? _____________ Report the coefficient for age? ____________ What is the intercept term ( a)? ______________ Now create a multiple regression model by adding the variable tvhours to the regression model. You will have two IVs: tvhours and age, and your dependent variable is weeksrk. Did the model improve? _______________ Determine how many weeks a year that a person works at the age of 22, if they watch 4 hours of TV per day.

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