Make a scatter plot for the given data. Label the tick marks on the x-axis and the y-axis Also, compute, r, the correlation coefficient and describe it's strength including if postive or negative. 17) X 27 5 4 8 3 r = y 3 6 4 4 5 2 description of r: Use the data to answer the questions. 18) The average number of people in a family that received welfare for various years is given below. The least-squares regression line is in the form y = ax + b where x is the year and y is the average number of people in a family who received welfare for the given year. a). Compute the least-squares regression line for predicting the average number of people in a family that received welfare family size from the year. b). Find the correlation coefficient. c). Predict the average welfare family size for 1982. Round to 1 decimal place. Year (x) Avg. Welfare Family Size (y) 1969 4.0 1973 3.6 1975 3.2 1979 3.0 1983 3.0 1988 3.0 1991 2.9
Make a scatter plot for the given data. Label the tick marks on the x-axis and the y-axis Also, compute, r, the correlation coefficient and describe it's strength including if postive or negative. 17) X 27 5 4 8 3 r = y 3 6 4 4 5 2 description of r: Use the data to answer the questions. 18) The average number of people in a family that received welfare for various years is given below. The least-squares regression line is in the form y = ax + b where x is the year and y is the average number of people in a family who received welfare for the given year. a). Compute the least-squares regression line for predicting the average number of people in a family that received welfare family size from the year. b). Find the correlation coefficient. c). Predict the average welfare family size for 1982. Round to 1 decimal place. Year (x) Avg. Welfare Family Size (y) 1969 4.0 1973 3.6 1975 3.2 1979 3.0 1983 3.0 1988 3.0 1991 2.9
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
17 and 18
![Make a scatter plot for the given data. Label the tick marks on the x-axis and the y-axis
Also, compute, r, the correlation coefficient and describe it's strength including if postive or negative.
17)
X
27 5 4 8 3
r =
y
3 6 4 4 5 2
description of r:
Use the data to answer the questions.
18) The average number of people in a family that received welfare for various years is given below.
The least-squares regression line is in the form y = ax + b where x is the year and y is the average number of
people in a family who received welfare for the given year.
a). Compute the least-squares regression line for predicting the average number of people in a family that
received welfare family size from the year.
b). Find the correlation coefficient.
c). Predict the average welfare family size for 1982. Round to 1 decimal place.
Year (x)
Avg. Welfare Family Size (y)
1969
4.0
1973
3.6
1975
3.2
1979
3.0
1983
3.0
1988
3.0
1991
2.9](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbb25f674-b85c-44be-a1b7-9e62a9852406%2Fe1fb8a8e-5f14-4a55-b74b-bbb54a239991%2Ffpxilg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Make a scatter plot for the given data. Label the tick marks on the x-axis and the y-axis
Also, compute, r, the correlation coefficient and describe it's strength including if postive or negative.
17)
X
27 5 4 8 3
r =
y
3 6 4 4 5 2
description of r:
Use the data to answer the questions.
18) The average number of people in a family that received welfare for various years is given below.
The least-squares regression line is in the form y = ax + b where x is the year and y is the average number of
people in a family who received welfare for the given year.
a). Compute the least-squares regression line for predicting the average number of people in a family that
received welfare family size from the year.
b). Find the correlation coefficient.
c). Predict the average welfare family size for 1982. Round to 1 decimal place.
Year (x)
Avg. Welfare Family Size (y)
1969
4.0
1973
3.6
1975
3.2
1979
3.0
1983
3.0
1988
3.0
1991
2.9
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