A social psychologist wanted to know whether people with higher incomes are gene

Question

A social psychologist wanted to know whether people with higher incomes are generally happier than those with lower incomes. He advertised the study on Craig's List where 100 people volunteered to fill out an online survey. Two of his survey items asked people to indicate their current income and to select a number on a scale from 1 to 5 to indicate how happy they are currently with their lives (higher numbers indicating more happiness). He then calculated a Pearson correlation coefficient between income level and rated happiness.

The results showed a correlations of r = .30, which turns out to be statistically significant at the .05 significance level. He published his findings stating that happiness comes from having more money.

1a) what was the independent variable?

a) educational level

b) level of happiness

c) there was no independent variable

d) low vs high income

1b) what was the dependent variable?

a) there was no dependent variable

b) experiment vs survey

c) rating scale

d) correlation coefficient

Explanation / Answer

Solution1a:

from words:

at happiness comes from having more money.

happyness depends on money

its lkike y depends on x

so income level is independent variable

independent variable is

d) low vs high income

Solution1b:

c) rating scale

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