Question

11
what type of correlation is shown on the graph?
perfect positive correlation
no correlation
positive correlation
negative correlation

Explanation:

Step1: Analyze the trend of the scatter - plot

In a scatter - plot, if as one variable (in this case, age of adults) increases, the other variable (blood pressure) also has a tendency to increase, it indicates a positive correlation. A perfect positive correlation would have all the points lying on a straight line. Here, the points do not lie on a straight line, but there is an upward trend.

Step2: Eliminate other options

• A perfect positive correlation (all points on a straight line) is not the case here.
• If there was no correlation, the points would be randomly scattered with no upward or downward trend.
• A negative correlation would show a downward trend (as one variable increases, the other decreases).

Answer:

positive correlation