Question

Read the table below: X Y 13 18 14 21 17 19 11 20 12 16...

Read the table below:

X Y
13 18
14 21
17 19
11 20
12 16
10 13

Determine

1. the correlation coefficient (r)

2. The coefficient of determination (r 2)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution:

X Y XY X^2 Y^2
13 18 234 169 324
14 21 294 196 441
17 19 323 289 361
11 20 220 121 400
12 16 192 144 256
10 13 130 100 169
n 6
sum(XY) 1393.00
sum(X) 77.00
sum(Y) 107.00
sum(X^2) 1019.00
sum(Y^2) 1951.00
Numerator 119.00
Denominator 218.05
r 0.5458
r square 0.2978
Xbar(mean) 12.8333
Ybar(mean) 17.8333
SD(X) 2.2669
SD(Y) 2.6719
b 0.6432
a 9.5784

r = 0.546

r2 = 0.298

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16...
Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14 14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18 11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18 18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...
Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16...
Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14 14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18 11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18 18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...
Determine the correlation coefficient, rounded to the nearest thousandth. x 12 14 13 17 18 20...
Determine the correlation coefficient, rounded to the nearest thousandth. x 12 14 13 17 18 20 y 30 10 10 9 6 6
The table below contains two samples (X and Y). Please construct a test where the null...
The table below contains two samples (X and Y). Please construct a test where the null hypothesis is that the population mean Y exceeds the population mean X by exactly 3. Please note that we don't know the population standard deviations and can't assume that they are equal. Please state the p-value of your test. X Y 15 13 10 13 11 12 12 19 11 14 17 15 11 19 16 18 15 14 10 12 17 12 16...
Consider the following data: 25 24 18 20 21 18 16 20 23 17 15 13...
Consider the following data: 25 24 18 20 21 18 16 20 23 17 15 13 19 23 24 20 16 26 21 24 15 22 16 12 20 23 19 26 20 25 21 19 21 25 23 26 21 19 20 14 (a) Develop a frequency distribution using classes of 12-14, 15-17, 18-20, 21-23, and 24-26. Class Frequency   12-14   15-17   18-20   21-23   24-26     Total (b) Develop a relative frequency distribution and a percent frequency distribution using the classes...
1st You are given the data in the table below; 12   12    18   18    21    27   ...
1st You are given the data in the table below; 12   12    18   18    21    27    7    14 21 19    17   10    20    23   16     9 Requirement. Describe the steps you would take to construct the boxplot that fits these data  2nd The Statistics Bureau surveyed 100 university students and found that 20% had gym membership Requirements. Describe the methodology you would use to find the 95% confidence interval for the proportion of the population that has gym membership 3rd...
12, 16, 21, 14, 21, 20, 17, 13, 18, 22 Find a 95% CI for the...
12, 16, 21, 14, 21, 20, 17, 13, 18, 22 Find a 95% CI for the population mean assuming the population variance is 12.   From your CI above do you think the population mean could be 24? State Yes or No and why. Find a 90% CI for the population mean assuming the population standard deviation is unknown. From your CI above do you think the population mean could be 18? State Yes or No and why. Find a 90%...
Statistics question: For the following values: 12, 17, 20, 14, 11, 21, 23, 9, 11, 11,...
Statistics question: For the following values: 12, 17, 20, 14, 11, 21, 23, 9, 11, 11, 15, 16 a) Find the mean, the median, and the mode b) Calculate the standard deviation, the table should be: |x | (x - x') | (x-x)^2|
Suppose we have the following data 12 17 13 25 16 21 30 14 16 18...
Suppose we have the following data 12 17 13 25 16 21 30 14 16 18 to find the average value of 10% trimmed mean. Which number will be removed from calculation?
Consider the following sample:             x 9 6 7 5 8 y 19 14 16 12...
Consider the following sample:             x 9 6 7 5 8 y 19 14 16 12 15             Calculate the coefficient of correlation. Does correlation coefficient provide information about the relationship between x and y? Explain. Find the linear regression line. Find y, if x is 10.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT