The table shows the height of a plant at each month. Use the table to answer the questions. (Use the Desmos graphing calculator to do this problem.)

Question

Number of months
1
2
3
4
5
6
7
Height of plant (inches)
2.3
3.6
5.2
4.9
7.3
7.6
8.0

a) What is the equation of the line of best fit? How tall can we expect the plant to be after 13 months?

b ) What is the correlation coefficient? How confident can you be that your predicted value will be reasonably close to the actual value?

Answer 1

so, did you use Desmos?
There are several other handy linear regression calculators online as well.