Question: The body and heart masses of fourteen 10 month-old mice are tabulated below:

Body mass (g) Heart mass (mg)

1 2 118
2 30 136
3 37 156
4 38 150
5 32 140
6 36 155
7 32 157
8 32 114
9 38 144
10 42 159
11 36 149
12 44 170
13 33 131
14 38 160

Draw a scatter diagram of these data.

Calculate the equation of regression line and draw this line on the scatter plot.