Lab Exercise on Analyzing Two-Way Tables with Drugs Survey Data - Prof. Edith Seier, Study notes of Statistics

Download Lab Exercise on Analyzing Two-Way Tables with Drugs Survey Data - Prof. Edith Seier and more Study notes Statistics in PDF only on Docsity! Lab on Two Way Tables using Drugs data Name _______________________ Open the data file drugsurv.mtw and you will see the answers of 503 people 18 years or older, selected at random, for a phone interview in a state in the Midwest in 1997. The variables in the data file are:  Gender  Age  years of education  ever smoker  smoking status  tried marijuana  alcohol dependency.  Age group 1. Create a two way table for gender and having tried marijuana calculating counts and row percentages (in Minitab you can use STAT>Table>Cross tabulation) , insert the table here: a) What % of women have tried marijuana?________What % of men have tried marijuana? _____ b) Do you think that trying marijuana might be associated with gender? ___________ c) From the two way table obtain the marginal distribution of gender and write it here d) From the two way table obtain the conditional distribution of marijuana conditioned to gender=male. 2. Obtain the two-way table (counts and row percentages) for Gender & smoking statu and paste it here. a) Who are more likely to become smokers, males or females? _____________ b) Who are more likely to quit smoking once they are smokers, males or females?________ 3. Obtain the two-way table for ‘Being an ever smoker ‘& ‘having tried marijuana’ and paste it here. Are smokers more likely or less likely to try marijuana than non-smokers?____________ 4. Obtain a two way table for ‘ Age group’ and ‘alcohol dependency’. Which age group has the highest incidence of alcohol dependency?