Question

determine whether the graph shows a positive correlation, a negative correlation, or no correlation. if there is a positivenegative correlation, describe its meaning in the situation.
consumer price index, 1950 - 2002
source: bureau of labor statistics, u.s. dept. of labor
a. no correlation
b. positive correlation; as time passes, the cpi increases.

Explanation:

Step1: Analyze the trend of the data points

Looking at the graph of Consumer Price Index (CPI) over the years from 1950 - 2002. As the \(x\) - value (year) increases, the \(y\) - value (CPI) also increases.

Step2: Recall the definition of positive correlation

In a positive correlation, when one variable (in this case, year) increases, the other variable (CPI) also has a tendency to increase.

Answer:

b. positive correlation; as time passes, the CPI increases.