How do you calculate average velocity with time and height with a given data set?

Question

Given Data Set:

Time Height

0 0

0.2 15

0.4 40

0.8 75

1 120

1.2 175

1.4 190

1.6 188

1.8 180

2 177

2.2 174

How would I calculate the average velocity between 0.8 and 1.4 seconds?

Answer 1

Average Velocity = Total distance /time = ( 190 - 75) / ( 1.4 - 0.8) = 115/ 0.6 = 191.67 m/s