Question

Data are collected for ten different brands of light bulbs. The data are then graphed. Which statement best describes the trend (or pattern) in the data?

a. The trend is increasing (the higher the price, the longer the light bulb tends to last), and the trend is approximately linear.

b. The trend is increasing (the higher the price, the longer the light bulb tends to last), and the trend is not linear.

C There is no real pattern to the data.

1000

900

800

700

600

500

400

300

4. Explain the answer you chose.

200

100

Time light bulb lasts (hours)

-100

03

Price of light bulb (dallars)

Answer 1

The trend is increasing (the higher the price, the longer the light bulb tends to last), and the trend is not linear.

How to determine the trend (or pattern) in the data?

From the question, we have the following parameters that can be used in our computation:

The image of the scatter plot

On the scatter plot, we can see that

The points appear to be on a curve

Also, we can see that

As the x values increases the y values increases

This represents a positive linear association.

This in other words means a positive correlation and a positive trend

Hence, the trend is (b)