Question
1)A. Use a calculator to verify that Σx = 24.0, Σx2 = 85.48, Σy = 53.3,...
1)A. Use a calculator to verify that Σx = 24.0,
Σx2 = 85.48, Σy = 53.3,
Σy2 = 458.51 and Σxy = 189.96.
Compute r. (Round to 3 decimal places.)
B.As x increases, does the value of r imply that
y should tend to increase or decrease? Select one.
Given our value of r, we can not draw any conclusions for the behavior of y as x increases.
Given our value of r, y should tend to decrease as x increases.
Given our value of r, y should tend to remain constant as x increases.
Given our value of r, y should tend to increase as x increases.
Homework Answers
Answer #1
I
don't get the size of data set. If you have then put the value of
the formula of r and interpret it as per my explanation.
Not the answer you're looking for?
Similar Questions
(A) Use a calculator to verify that Σx = 23.6, Σx2 = 82.20, Σy = 54.1,...
(A) Use a calculator to verify that Σx = 23.6, Σx2 = 82.20, Σy =
54.1, Σy2 = 469.57 and Σxy = 188.40.
Compute r. (Round to 3 decimal places.)
(B) Use a calculator to verify that Σx = 130,
Σx2 = 6808, Σy = 149,
Σy2 = 4743, and Σxy = 2900
Compute r. (Round your answer to three decimal
places)
sorry! for the problem that starts with the decimal
23.6 there n=7
for the one that starts with...
Use a calculator to verify that Σx = 132, Σx2 = 6552, Σy = 149, Σy2...
Use a calculator to verify that Σx = 132,
Σx2 = 6552, Σy = 149,
Σy2 = 4765, and Σxy = 2971. Compute
r. (Round your answer to three decimal places)
x
3
7
15
37
70
y
40
35
30
28
16
Use a calculator to verify that Σx = 153.0, Σx2 = 3424.78, Σy = 243, Σy2...
Use a calculator to verify that Σx = 153.0, Σx2 = 3424.78, Σy =
243, Σy2 = 9785 and Σxy = 5524.6. Compute r. (Round to 3 decimal
places.)
x
10.9
31.8
24.5
14.3
7.5
27.7
16.2
20.1
y
24
72
39
23
15
30
15
25
Let x be the average number of employees in a group health insurance plan, and let...
Let x be the average number of employees in a group health
insurance plan, and let y be the average administrative cost as a
percentage of claims. x 3 7 15 30 72 y 40 35 30 26 17
(b) Would you say the correlation is low, moderate, or strong?
positive or negative? moderate and negative moderate and positive
strong and negative low and negative low and positive strong and
positive
(c) Use a calculator (show buttons on calculator) to...
Let x be the average number of employees in a group health insurance plan, and let...
Let x be the average number of employees in a group
health insurance plan, and let y be the average
administrative cost as a percentage of claims.
x
3
7
15
36
70
y
40
35
30
28
17
(b) Would you say the correlation is low, moderate, or strong?
positive or negative?
strong and negativestrong and
positive moderate and negativemoderate
and positivelow and negativelow and positive
(c) Use a calculator to verify that Σx = 131,
Σx2 = 6479, Σy...
Is the magnitude of an earthquake related to the depth below the surface at which the...
Is the magnitude of an earthquake related to the depth below the
surface at which the quake occurs? Let x be the magnitude
of an earthquake (on the Richter scale), and let y be the
depth (in kilometers) of the quake below the surface at the
epicenter.
x
3.4
4.5
3.3
4.5
2.6
3.2
3.4
y
4.8
9.8
11.2
10.0
7.9
3.9
5.5
Then visualize the line you think best fits the data.
(b) Use a calculator to verify that...
Is the magnitude of an earthquake related to the depth below the surface at which the...
Is the magnitude of an earthquake related to the depth below the
surface at which the quake occurs? Let x be the magnitude
of an earthquake (on the Richter scale), and let y be the
depth (in kilometers) of the quake below the surface at the
epicenter.
x
3.0
4.4
3.3
4.5
2.6
3.2
3.4
y
4.8
9.9
11.2
10.0
7.9
3.9
5.5
(a) Make a scatter diagram of the data.
Then visualize the line you think best fits the...
Let x be the average number of employees in a group health insurance plan, and let...
Let x be the average number of employees in a group
health insurance plan, and let y be the average
administrative cost as a percentage of claims.
x
3
7
15
36
73
y
40
35
30
27
17
(b) Would you say the correlation is low, moderate, or strong?
positive or negative?
low and negative
strong and positive
moderate and negative
low and positive
strong and negative
moderate and positive
(c) Use a calculator to verify that Σx =...
Is the magnitude of an earthquake related to the depth below the surface at which the...
Is the magnitude of an earthquake related to the depth below the
surface at which the quake occurs? Let x be the magnitude
of an earthquake (on the Richter scale), and let y be the
depth (in kilometers) of the quake below the surface at the
epicenter.
x
3.0
4.7
3.3
4.5
2.6
3.2
3.4
y
5.0
9.7
11.2
10.0
7.9
3.9
5.5
(a) Make a scatter diagram of the data.
Then visualize the line you think best fits the...
In baseball, is there a linear correlation between batting average and home run percentage? Let x...
In baseball, is there a linear correlation between batting
average and home run percentage? Let x represent the
batting average of a professional baseball player, and let
y represent the player's home run percentage (number of
home runs per 100 times at bat). A random sample of n = 7
professional baseball players gave the following information.
x
0.247
0.249
0.286
0.263
0.268
0.339
0.299
y
1.0
3.5
5.5
3.8
3.5
7.3
5.0
(b) Use a calculator to verify that...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 20 minutes ago
asked 24 minutes ago
asked 24 minutes ago
asked 24 minutes ago
asked 36 minutes ago
asked 46 minutes ago
asked 47 minutes ago
asked 51 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago