Question

Does age has a significant effect on the following variables? Use statistical tests.

	9 y/o	21 y/o	52 y/o	86 y/o
Stiffness Index	5.75	6.47	7.23	10.89
Reflection Index	66.6	73.3	69.5	79.14
Blood Pressure	75/50	110/74	117/75	130/95
Pulse Pressure	25	36	32	35
Heart Rate	76.43	74	66	65

Answer 1

For age to have significant effect it should increase / decrease continuously

{i.e. , if it is increases then it keeps increasing with age without decreasing and vice versa}

for following variables lets see if age has significant effect :

Stiffness Index : YES, as it keeps increasing continuously with age

Reflection Index : NO, as it doesn't keep increasing/decreasing continuously with age

Blood Pressure : YES, as it keeps increasing continuously with age

Pulse Pressure : NO, as it doesn't keep increasing / decreasing continuously with age

Heart Rate : YES, as it keeps decreasing continuously with age

P.S. (please upvote if you find the answer satisfactory)