Maths-

General

Easy

Question

# Explain why the drawn line of best fit is accurate or why not.

This scatter plot shows the amount copper in water in ppm versus plant growth in cm over three months.

Hint:

### A regression line or a trend line is used to approximate the pattern of the data set into linear line. It helps us to analyze the direction and pattern of the set of data.

We are asked to check whether the trend line is the best fir or not for the given scatter plot.

## The correct answer is:

### Step 1 of 2:

When we construct a trend line for scatter plot, we must keep in mind that the points should cluster around or on the line. This helps to study the relation far better. Here, there several points that stay quite far away from the line. Hence, it is not the best fit the scatter plot.

Step 2 of 2:

The trend line that could possible describe the pattern of the data can be:

Note:

A scatter plot can have numerous trend lines. The best line has to be chosen by making sure that the points lie around or on the line and clustered together rather than spreading around.

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