Question

compute r,r^{2} and 1-r^{2} for the problem
below .What does r,r^{2} and 1-r^{2} mean ? Is the
correlation strong or weak ?

You are given the following data:

X(Independent Variable) Y(Dependent variable)

Month Advertising Expenditure (in Millions of $) Sales Revenue (in Millions of $)

July 1 3

August 2 7

September 3 5

October 4 11

November 5 14

Answer #1

Questions 6 to 10 are
based on the problem below:
Compute the Pearson
Correlation Coefficient, r, for the following data
X
Y
2
3
3
1
6
5
4
4
5
2
The Pearson
Correlation, r is

Construct a scattergram for each data set. Then calculate r and
r2 for each data set. Interpret their values. Complete parts a
through d.
a.
x
−1
0
1
2
3
y
−3
0
1
4
5
Calculate r.
r=. 9853. (Round to four decimal places as
needed.)Calculate
r2=0.9709(Round to four decimal places as needed.)
Interpret r. Choose the correct answer below.
A.There is not enough information to answer this question.
B.There is a very strong negative linear relationship between...

Model Summary
Model
R
R Square
Adjusted R Square
Std. Error of the Estimate
1
.816
.666
.629
1.23721
a. Predictors:
(Constant),x
ANOVA
Model
Sum of Squares
df
Mean Square
F
Sig
Regression
Residual
Total
27.500
13.776
41.276
1
9
10
27.500
1.531
17.966
.002b
a. Dependent Variable: Y
b. Predictors: (Constant), X
Coefficients
Model
Understand Coefficients
B
Std Error
Standardized
Coefficients
Beta
t
Sig
1 (Constant)
x
3.001
1.125
.500
.118
.816
2.667...

1. You are trying to see if there is a
relationship between height and weight. Write down the following
data, then by using a software program (e.g., Excel and SPSS), find
the correlation between the following data:
Height: 5' 11", 6' 2", 4' 3", 5' 5",
6' 6", 5' 2", 5' 9"
Weight: 175, 190, 102, 150, 210, 130,
160
a. Using the above data, find the
regression equation using weight as the dependent variable and
height as the independent...

1. Coles Corporation, Inc. makes and sells a single product,
Product R. Three yards of Material K are needed to make one unit of
Product R. Budgeted production of Product R for the next five
months is as follows:
August
14,000
units
September
14,500
units
October
15,500
units
November
12,600
units
December
11,900
units
The company wants to maintain monthly ending inventories of
Material K equal to 20% of the following month's production needs.
On July 31, this requirement was...

1. Supply costs at Coulthard Corporation's chain of gyms are
listed below:
Client-Visits
Supply Cost
March
11,667
$
28,349
April
11,463
$
28,298
May
11,995
$
28,431
June
14,000
$
28,932
July
11,727
$
28,364
August
11,213
$
28,235
September
12,007
$
28,434
October
11,698
$
28,357
November
11,846
$
28,394
Management believes that supply cost is a mixed cost that
depends on client-visits. Use the high-low method to estimate the
variable and fixed components of this cost. Compute the...

Problem 1-2A (Part Level Submission) Judi Salem opened a law
office on July 1, 2017. On July 31, the balance sheet showed Cash
$5,900, Accounts Receivable $2,000, Supplies $500, Equipment
$6,100, Accounts Payable $4,300, and Owner’s Capital $10,200.
During August, the following transactions occurred. 1. Collected
$1,700 of accounts receivable. 2. Paid $2,700 cash on accounts
payable. 3. Recognized revenue of $7,600, of which $3,200 is
collected in cash and the balance is due in September. 4. Purchased
additional equipment...

The table below shows the average amounts spent per week by men
and women In each of four spending categories:
A
B
C
D
Men
$54
$27
$105
$22
Women
$21
$85
$100
$75
What method provides the best descriptive graph?
1.
Pie chart
2.
Bar chart
3.
Side by side bar charts
4.
Two pie charts
The first step in the solution of a simple regression problem is
to :
a.
Calculate the mean of the independent variable, the...

Problem 1.
The Jedi Hotel has been tracking its property
repairs and maintenance costs (PR&M) over the past year. The
results were as follows for the year:
The Jedi Hotel
Month
Activity (Room Nights Sold)
PR&M Costs
January
2050
$6,180
February
2800
$7,195
March
3200
$7,564
April
3800
$7,840
May
4100
$8,763
June
4350
$10,700
July
4700
$11,161
August
4900
$11,991
September
4500
$10,977
October
3300
$7,656
November
2700
$7,102
December
2400
$6,641
Required:
Using the high-low two point method:...

A jeweler prices diamonds on the basis of quality (with values
from 0 to 8, with 8 being flawless and 0 containing numerous
imperfections) and color (with values from 1 to 10, with 10 being
pure white and 1 being yellow). Based on the price per carat (in
hundreds of dollars) of the following 11 diamonds of approximately
the same weight, determine the relationship between quality (X1),
color (X2) and price (Y).
Color Quality Price
7 5 65
3 7...

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