OH NO!!! Madeleine’s data has been corrupted, again! Using the incomplete data file below, which she was able to recover from he
r hard drive, can you help finish her analysis? She needs to calculate:
(note: you DO NOT need to fill in all the missing data. You only need to calculate the statistics listed below)
A) N
B) The mean of set X
C) The mean of set Y
D) SSx
E) Σ(X) × Σ(Y)
F) SSxy
G) √ ( SSx × SSy)
H) r
I ) b (slope)
J ) a (intercept)
(note: you DO NOT need to fill in all the missing data. You only need to calculate the statistics listed below)
A) N
B) The mean of set X
C) The mean of set Y
D) SSx
E) Σ(X) × Σ(Y)
F) SSxy
G) √ ( SSx × SSy)
H) r
I ) b (slope)
J ) a (intercept)
1 answer:
Answer:
a. N=25
b. X[bar]= 60.52
c. Y[bar]= 106.72
d. SSx= 115.24
e. ∑X*∑Y = 4036684
f. SSxy= 202020.3296
g. √(SSx*SSy)= 449.46
Step-by-step explanation:
Hello!
Using the attached data you need to calculate some statistics.
a) N
The sample size is listed under the first column "subject" You can see that 25 subjects qhere studied so N=25.
b.
The mean of set X is equal to X[bar]= ∑X/n= 1513/25= 60.52
∑X is listed in the second table.
c.
The mean of ser Y is Y[bar]= ∑Y/n= 2668/25= 106.72
∑Y is listed in the second table.
d.
Sum of Squares of set X SSx= ∑X²-[(∑X)²/n]= 91682-[(1513)²/25]= 115.24
e.
∑X*∑Y =1513*2668= 4036684
f.
SSxy= (∑X²-[(∑X)²/n]) * (∑Y²-[(∑Y)²/n])= (91682-[(1513)²/25]) * (286482*[(2668)²/25])= 202020.3296
g.
√(SSx*SSy)= √(115.24*1753)= 449.46
I hope you have a SUPER day!
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Answer:
The correct options are: Option A, C and D
Step-by-step explanation:
We need to choose correct options by solving the given system of equations.
Let:
First Multiply equation 2 by 2 and add both equations.
Now, we will put value of x in equation 2 to find value of y
So, we get x = 3.14 and y = 2.14
Solution set is (3.14,2.14)
The given solution set (2,3) is not the solution of system of equations.
If we put x=2 and y =3 in the first equation:
(2,3) when substituted in the First equation the equation is True.
If we put x=2 and y =3 in the second equation:
So, (2,3) when substituted in the second equation the equation is false.
The correct options are: Option A, C and D