Stat 200 Lab 15 Go to the course web site www stat psu edu rho stat200 then use the link for the class data set collected in the first survey in January The link takes you to a copy of the survey form that also has a link to the data Link to the data Copy and paste the data to a Minitab worksheet Note that variable names are not present so paste to the first data cell In order the variables are C1 C2 C3 C4 C5 C6 C7 Sex Ear Pierces total number Tattoo CDs about how many owned Height Choice of Height Importance of Personality versus Looks 0 to 9 scale 0 personality very imp 9 looks very important C8 Section 1 to 4 C9 Easiest to Make Friends With Opposite Sex Same Sex No Diff Activity 1 What is the proportion with a tattoo in each section Use Stat Tables Cross Tabulation get four different proportions Is there a statistically significant difference among the sections with regard to the proportion with a tattoo Go back to the Cross Tabulation dialog click on Chi Square test also get expected counts What is our null hypothesis What is the p value of the test What is the conclusion What do the expected counts measure Page 2 Activity 2 Is there a statistically significant difference between males and females with regard to the Easiest to Make Friends With question in C9 Do a Chi Square test What is the pvalue for the test State a conclusion Activity 3 Is there a statistically significant difference between the number of CDs owned by mean and women Start by doing a 2 sample t to compare means the samples are in one column State null and alternative hypothesis State a conclusion about these hypotheses What is the estimated difference between the means Do a histogram of the CDs variable Are the data skewed or symmetric Should we be analyzing means or medians
View Full Document
Unlocking...