Answer
a) See attached image. (created in excel)
b) 0.908
c) There is a strong positive correlation between the variables. As age increases, systolic blood pressure increases.
Work Step by Step
PART A
no working to show because its just a graph
PART B
i)
$\sum{x}$ = 416
$\sum{y}$ = 1512
$\sum{xy}$ = 68173
$\sum{x^{2}}$ = 20398
$\sum{y^{2}}$ = 239514
ii) plug into the correlation coefficient formula: see image below
PART C
There is a strong positive correlation between the variables. As age increases, systolic blood pressure increases.
