X = (3, 7, 3, 4, 4) Y= (5, 7, 8, 4, 8) Question 6 (1 point) X i Y i = Question 6
ID: 3200144 • Letter: X
Question
X = (3, 7, 3, 4, 4)
Y= (5, 7, 8, 4, 8)
Question 6 (1 point)
XiYi =
Question 6 options:
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Question 7 (1 point)
(Xi)2 =
Question 7 options:
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Question 8 (1 point)
(Xi - Yi) 2 =
Question 8 options:
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Question 9 (1 point)
Xi =
Question 9 options:
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Question 10 (1 point)
(Xi) (Yi) =
Question 10 options:
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Question 11 (1 point)
X = (Mean of X) =
Question 11 options:
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Question 12 (1 point)
Y = (Mean of Y) =
Question 12 options:
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Question 13 (1 point)
(Xi-X)=
Question 13 options:
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Question 14 (1 point)
(Yi-Y)=
Question 14 options:
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Question 15 (1 point)
X
Question 15 options:
Sum of each individual value of X squared
Sum of each individual value of X
Sum of each individual value of Y
Sum of each individual value of Y squared
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Question 16 (1 point)
Y
Question 16 options:
Sum of all the individual values of Y
Sum of all the individual values of X
Mean of Y
Sum of Y values squared
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Question 17 (1 point)
X2
Question 17 options:
Sum of the X values
Sum of each individual X value squared
Sum of the X values, quantity squared
Mean of X squared
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Question 18 (1 point)
XY
Question 18 options:
The sum of X times the sum of Y
The mean of X times the mean of Y
Square each value of X and each value of Y and sum the results
Multiply each individual value of X by the corresponding value of Y and sum the results
Explanation / Answer
Solution:
The calculation table for answering the following questions is given as below:
Obs.
X
Y
XY
X^2
Y^2
(X - Y)^2
1
3
5
15
9
25
4
2
7
7
49
49
49
0
3
3
8
24
9
64
25
4
4
4
16
16
16
0
5
4
8
32
16
64
16
Total
X = 21
Y = 32
XY = 136
X^2 = 99
Y^2 = 218
(X – Y)^2 = 45
Xbar =21/5 = 4.2
Ybar = 32/5 = 6.4
X
Y
(X - Xbar)
(Y - Ybar)
3
5
-1.2
-1.4
7
7
2.8
0.6
3
8
-1.2
1.6
4
4
-0.2
-2.4
4
8
-0.2
1.6
Total
0
0
Question 6
XiYi = 136
Question 7
(Xi)^2 = 99
Question 8
(Xi – Yi)^2 = 45
Question 9
Xi = 21
Question 10
(Xi)(Yi) = 21*32 = 672
Question 11
Xbar = Mean of X = 4.2
Question 12
Ybar = Mean of Y = 6.4
Question 13
(Xi – Xbar) = 0
Question 14
(Yi – Ybar) = 0
Question 15
Answer: b) Sum of each individual value of X
Question 16
Answer: a) Sum of all the individual values of Y
Question 17
Answer: b) Sum of each individual X value squared
Question 18
Answer: d)
Multiply each individual value of X by the corresponding value of Y and sum the results
Obs.
X
Y
XY
X^2
Y^2
(X - Y)^2
1
3
5
15
9
25
4
2
7
7
49
49
49
0
3
3
8
24
9
64
25
4
4
4
16
16
16
0
5
4
8
32
16
64
16
Total
X = 21
Y = 32
XY = 136
X^2 = 99
Y^2 = 218
(X – Y)^2 = 45
Xbar =21/5 = 4.2
Ybar = 32/5 = 6.4
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