Based on MTF2011 data we present the crosstabulation for stu

Based on MTF2011 data, we present the cross-tabulation for student race and how many of their friends smoke marijuana.

Data:

                                                                                                 Black            White      Hispanic         Total

How many friends smoke marijuana? 1. NONE

                                                                    2. A FEW

                                                                    3. SOME

                                                                    4. MOST

                                                                    5. ALL

Total

50

34

40

47

8

179

138

208

229

184

30

789

33

36

53

53

11

186

221

278

322

284

49

1154

a. Identify the dependent and independent variables for this table.

b. What proportion of black, white, and Hispanic respondents reports that most or all of their friends smoke marijuana?Calculate these proportions separately.

c. Explain the relationship between student race and the number of friends who smoke marijuana.

Solution

a)Here the independent vairable is the ethnicity or student race (black,white and hispanic) and the dependent variable is the person who smoke.

b)Sum of the most=284

Sum of the all =49

Most+All =284+49=333

c)The friends who smoke marijuana is highest among the white then hispanic and it is least in the black

Proportion who smoke (most+all)=333/1154 =.28856