Question

Cathy needs to collect linear data which set of data should cathy collect

A. The height of a building for 20 years.
B.The height of a person from birth till 20
C. the height of a tree for 20 years.
D. The height of an elephant for 20 years.

Answer 1

Option A is correct.

Cathy needs to collect linear data . She should collect the data of option A-The height of a building for 20 years.

Step-by-step explanation:

Linear data is that data whose slope is always same. Here lets assume, initially the building had 2 floors. Each year 2 floors are added above the previous floors. So our coordinate will be (0,2) (1,4) (2,6) (3,8) and so on.

So slope =
`(difference in y)/(difference in x)`

=
`(4-2)/(1-0) = (2)/(1)`

=
`(8-6)/(3-2)` =
`(2)/(1)`

So, here slope is 2 for all coordinates.