Question

Use the given data to find the equation of the regression line. Examine the scatterplot and identify a characteristic of the data that is ignored by the regression line.

x	66 5 10 9 7 11 8 12 14 15 13
y	4.19 2.42 8.22 7.67 5.66 8.47 6.81 8.41 7.39 6.42 8.06

y with caret =__+__x

(Round to two decimal places as needed.)

Create a scatterplot of the data. Choose the correct graph below.

Identify a characteristic of the data that is ignored by the regression line.

A. There is an influential point that strongly affects the graph of the regression line.

B. The data has a pattern that is not a staight line.

C. There is no trend in the data.

D. There is no characteristic of the data that is ignored by the regression line.

Answer 1

Solution :

X	Y	X * Y	X * X
66	4.19	276.54	4356
5	2.42	12.1	25
10	8.22	82.2	100
9	7.67	69.03	81
7	5.66	39.62	49
11	8.47	93.17	121
8	6.81	54.48	64
12	8.41	100.92	144
14	7.39	103.46	196
15	6.42	96.3	225
13	8.06	104.78	169