You are interested in learning if theres correlation between

You are interested in learning if there\'s correlation between cigarette sales and lung cancer so you collect the following data: Should you use a Pearson\'s or a Spearman\'s Rank Correlation for this data? Why? Calculate the correlation coefficient using SPSS. What is the value of f for this data set? What do you conclude about the type of correlation (positive / negative/ significant/ non-significant)?

Solution

b).

Correlations

CIG

LUNG

CIG

Pearson Correlation

1

.697^**

Sig. (2-tailed)

.000

N

44

44

LUNG

Pearson Correlation

.697^**

1

Sig. (2-tailed)

.000

N

44

44

**. Correlation is significant at the 0.01 level (2-tailed).

Correlation r=0.697

The Correlation is positive and significant.

Correlations
	CIG	LUNG
CIG	Pearson Correlation	1	.697**
Sig. (2-tailed)		.000
N	44	44
LUNG	Pearson Correlation	.697**	1
Sig. (2-tailed)	.000
N	44	44
**. Correlation is significant at the 0.01 level (2-tailed).