1.In regression, an influential point is defined as:

Select one:

a.

An outlier because it is far away from the other data points

b.

A pair of data that dramatically change the slope of a regression line

c.All of these statements are true

d.

An extreme data point, but usually not a cause for concern

2.After using Excel to find the regression model for "Website Visits", how much do you expect a customer to spend after they visit your website for 10 minutes and view 5 pages?

Select one:

a.

$58.85

b.$99.21

c.$106.70

d.$66.34

3.In regression, a residual is:

Select one:

a.

The difference between an observed value of x and the predicted value of y

b.The difference between an observed value of y and the predicted value of y

c.

The difference between an observed value of y and the predicted value of x

d.

The difference between an observed value of x and the predicted value of y

WEBSITE VISITS DATA

Customer	Day	Browser	Time (min)	Pages Viewed	Amount Spent ($)
1	Mon	Internet Explorer	12.0	4	54.52
2	Wed	Other	19.5	6	94.90
3	Mon	Internet Explorer	8.5	4	26.68
4	Tue	Firefox	11.4	2	44.73
5	Wed	Internet Explorer	11.3	4	66.27
6	Sat	Firefox	10.5	6	67.80
7	Sun	Internet Explorer	11.4	2	36.04
8	Fri	Firefox	4.3	6	55.96
9	Wed	Firefox	12.7	3	70.94
10	Tue	Internet Explorer	24.7	7	68.73
11	Sat	Other	13.3	6	54.04
12	Sun	Firefox	14.3	5	48.05
13	Sun	Other	11.7	7	64.16
14	Mon	Firefox	24.4	10	158.51
15	Fri	Internet Explorer	8.4	3	84.12
16	Thu	Internet Explorer	9.6	4	59.20
17	Thu	Internet Explorer	23.3	7	91.62
18	Mon	Internet Explorer	14.0	7	126.40
19	Fri	Other	5.6	4	68.45
20	Wed	Internet Explorer	15.1	5	32.69
21	Sat	Firefox	16.3	5	78.58
22	Tue	Internet Explorer	10.2	6	74.43
23	Sun	Internet Explorer	8.0	3	32.73
24	Tue	Firefox	8.0	2	48.66
25	Fri	Firefox	9.6	3	54.66
26	Wed	Internet Explorer	11.0	2	40.54
27	Sat	Internet Explorer	16.9	5	34.69
28	Sat	Firefox	6.0	4	27.91
29	Fri	Firefox	32.9	10	155.30
30	Mon	Other	11.8	9	120.25
31	Thu	Internet Explorer	7.1	2	41.20
32	Fri	Firefox	18.0	8	134.40
33	Sun	Internet Explorer	11.8	4	37.17
34	Fri	Internet Explorer	9.1	3	52.09
35	Tue	Internet Explorer	7.8	5	71.81
36	Mon	Firefox	16.5	5	59.99
37	Thu	Firefox	6.2	4	84.17
38	Sat	Internet Explorer	11.3	4	55.58
39	Tue	Internet Explorer	10.6	2	39.06
40	Wed	Internet Explorer	5.0	5	36.48
41	Tue	Other	15.9	4	67.44
42	Sat	Internet Explorer	18.1	7	60.14
43	Fri	Firefox	10.8	4	70.38
44	Mon	Internet Explorer	13.3	7	110.65
45	Mon	Internet Explorer	30.1	6	104.23
46	Fri	Firefox	13.7	4	68.17
47	Thu	Internet Explorer	8.1	2	17.84
48	Fri	Internet Explorer	9.7	5	103.15
49	Mon	Other	7.3	6	52.15
50	Fri	Internet Explorer	13.4	3	98.75