a. slope = [tex]\displaystyle m=\frac{15}{2}[/tex]
b. slope = m = positive = positive correlation = two sets of data increase together
Further explanation
Scatter plot shows the relationship between data
We can use Regression to make lines on the chart or you can also make lines with the principle as close as possible to all points
Regression
[tex]\displaystyle m=\frac{N\sum (xy)-\sum x\sum y }{ N\sum (x^2)-(\sum x)^2}[/tex]
Because data is in the form of numbers from the hand span length and height of each of students. not displayed clearly, then we make a line directly by making points on the graph above and below the line as much as possible to be balanced
We specify 2 points that are crossed by a line, for example:
(6.45) and (8.60)
slope (m) = change in y / change in x
[tex]\displaystyle m=\frac{60-45}{8-6}\\\\m=\frac{15}{2}[/tex]
Slope has a positive value, and shows a positive correlation where the tendency of the number rises simultaneously, or can be concluded:
tall students will have the long hand span length too
Learn more
Line equation
https://brainly.com/question/10955762
Keywords : line equation, slope, regression, the hand span length and height, graph, Scatter plot
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