Question

Choose the correct answer

1. A sociology report concluded that the lifetime income is positively correlated with years of education.This means that

1. Person who stay in school longer tend to make less money
2. There is no relationship between education and income.
3. Persons who stay in school longer tend to make more money.
4. Persons who drop out of schoolearly tend to make more money.

2. A survey of farms in Minnesota asked the yield of wheat per acre and also asked the size of the farm in acres. The analysis of the data showed the correlation between size of farm and wheat yield iswas r=0.62.This means that

A. There is no connection between the size of the farm and the yield of wheat per acre.

B. larger farms tend to havve lower yeilds of wheat.

C.smaller farms tend to have lower yield of wheat.

D. gender is not a quantitative variable.

3. I read a newspaperthat the correlation between gender and incomelevel is r=0.32. I know that this is incorrect because

A. women make less than men, not more

B.the correlation would be negative, not positive.

C. INCOME IS NOT NORMALLY DISTRIBUTED

D. gender is not a quantitative variable.

4. From the data collected on a survey of Metro State Students, l computed the correlation coefficient between hours of TV watched per week and grade point average. I obtained r= -1.65. This means that

A. Students who watch more TV tend to get lower grade

B. I made an arithemetic mistake.

C.students who watch more Tv tend to get higher grade

D. students who watch less TV tend to get lower grades.

E. there is no connection between TV watching and grade point average

Answer 1

(1)

Correct option:

Persons who stay in school longer tend to make more money.

(2)

Correct option:

C.smaller farms tend to have lower yield of wheat.

(3)

Correct option:

D. gender is not a quantitative variable.

(4)

Correct option:

A. Students who watch more TV tend to get lower grade