Question

The table shows global mean temperature (in °C) every five years beginning in 1950. Find the mathematical model that best fits the data and use it to predict the global mean temperature in 2015. Code 1 for 1950, 2 for 1955, and so on.

5 yr mark	1	2	3	4	5	6	7	8	9	10
Temp.	13.8	13.9	14.0	13.9	14.1	14.0	14.3	14.1	14.5	14.5

A. linear model; 14.7°C

B. exponential model; 14.7°C

C. quadratic model; 15.1°C

D. power model; 14.4°C

Answer 1

C is the answer as quadratic model has highest r2 adjusted.

putting the x = 14 in equation of quadratic model we will get the answer 15.095.