Question

HELP BEST ANSWER

an experiment in a physics class involves dropping a golf ball and recording the distance in meters it falls for different times in sec after it was released the data are given in the table use technology to find the R^2 value of the data using a linear regression

chart

time: 0|0.5|1|1.5|2|2.5|3|

distance:0|1.2|4.9|11.0|19.5|30.5|44.0|


a.1.000
b.0.976
c.0.923
d.0.998

Answer 1

0.923

Explanation:

Answer 2

The correct option is c.

Explanation:

An experiment in a physics class involves dropping a golf ball and recording the distance in meters it falls for different times in sec.

The given data is

Time Distance

0 0

0.5 1.2

1 4.9

1.5 11.0

2 19.5

2.5 30.5

3 44.0

The equation of linear regression line is defined as

`y=a+bx`

The value of b is 14.657 and the value of a is -6.1143

The equation of linear regression line is

`y=14.657x-6.1143`

The value of R² is 0.9228.

Therefore option c is correct.