Question
In: Statistics and Probability
OrderNo. DeliveryTime NumberOfPizzas Distance Location 1 16.68 7 5.6 Downtown 2 11.5 3 2.2 Not Downtown...
| OrderNo. | DeliveryTime | NumberOfPizzas | Distance | Location |
| 1 | 16.68 | 7 | 5.6 | Downtown |
| 2 | 11.5 | 3 | 2.2 | Not Downtown |
| 3 | 12.03 | 3 | 3.4 | Downtown |
| 4 | 14.88 | 8 | 0.8 | Not Downtown |
| 5 | 13.75 | 6 | 1.5 | Not Downtown |
| 6 | 18.11 | 7 | 3.3 | Downtown |
| 7 | 8 | 2 | 1.1 | Downtown |
| 8 | 17.83 | 7 | 2.1 | Downtown |
| 9 | 79.24 | 30 | 14.6 | Not Downtown |
| 10 | 21.5 | 5 | 6.05 | Not Downtown |
| 11 | 40.33 | 16 | 6.88 | Downtown |
| 12 | 21 | 10 | 2.15 | Not Downtown |
| 13 | 13.5 | 4 | 2.55 | Not Downtown |
| 14 | 19.75 | 6 | 4.62 | Not Downtown |
| 15 | 24 | 9 | 4.48 | Not Downtown |
| 16 | 29 | 10 | 7.76 | Not Downtown |
| 17 | 15.35 | 6 | 2 | Not Downtown |
| 18 | 19 | 7 | 1.32 | Downtown |
| 19 | 9.5 | 3 | 0.36 | Not Downtown |
| 20 | 35.1 | 17 | 7.7 | Downtown |
| 21 | 17.9 | 10 | 1.4 | Downtown |
| 22 | 52.32 | 26 | 8.1 | Not Downtown |
| 23 | 18.75 | 9 | 4.5 | Downtown |
| 24 | 19.83 | 8 | 6.35 | Not Downtown |
| 25 | 10.75 | 4 | 1.5 | Downtown |
| 26 | 26 | 9 | 7.3 | Not Downtown |
| 27 | 14.21 | 5 | 2.4 | Not Downtown |
| 28 | 21 | 8 | 1.4 | Downtown |
| 29 | 10 | 4 | 0.9 | Not Downtown |
| 30 | 36 | 18 | 8 | Downtown |
| 31 | 18.1 | 9 | 1.5 | Downtown |
-
Recode any variables that need cleaning/recoding and show a screenshot of the new table. (4 points)
-
Report the descriptive statistics of the variables of interest. (3 points)
-
Plot a diagram that explores the relationship between delivery time and number of pizzas (3 points).
-
Report the correlation matrix of all variables. (3 points)
-
Discuss the correlation between number of pizzas and delivery time. (2 points)
Solutions
Expert Solution
The variable "Location" is recoded as 1 for "Downtown" and 0 for "Not Downtown".
It is a nominal variable.
The descriptive statistics associated with nominal variables are frequencies and percentages.
| Frequency | Percentage | |
| Downtown(1) | 14 | 45.16 |
| Not Downtown(0) | 17 | 54.84 |
Scatterplot that explores the relationship between delivery time and number of pizzas:
Correlation matrix:
| DeliveryTime | NumberOfPizzas | Distance | Location | |
| DeliveryTime | 1.0000 | 0.9594 | 0.8787 | -0.0903 |
| NumberOfPizzas | 0.9594 | 1.0000 | 0.7961 | -0.0066 |
| Distance | 0.8787 | 0.7961 | 1.0000 | -0.1283 |
| Location | -0.0903 | -0.0066 | -0.1283 | 1.0000 |
The correlation between number of pizzas and delivery time is 0.9594. So number of pizzas and delivery time has a very strong positive correlation. As one of the variable increases, the other also tend to increase.
orchestra answered 1 year agoRelated Solutions
OrderNo. DeliveryTime NumberOfPizzas Distance Location 1 16.68 7 5.6 Downtown 2 11.5 3 2.2 Not Downtown...
OrderNo.
DeliveryTime
NumberOfPizzas
Distance
Location
1
16.68
7
5.6
Downtown
2
11.5
3
2.2
Not Downtown
3
12.03
3
3.4
Downtown
4
14.88
8
0.8
Not Downtown
5
13.75
6
1.5
Not Downtown
6
18.11
7
3.3
Downtown
7
8
2
1.1
Downtown
8
17.83
7
2.1
Downtown
9
79.24
30
14.6
Not Downtown
10
21.5
5
6.05
Not Downtown
11
40.33
16
6.88
Downtown
12
21
10
2.15
Not Downtown
13
13.5
4
2.55
Not Downtown
14
19.75
6...
A= 2 B= 3 C= 7 A student pulls a (25.0+A) kg box a distance of...
A= 2
B= 3
C= 7
A student pulls a (25.0+A) kg box a distance of (4.50 + B) m up
a ramp set at 25.8 degrees using a force of (154 + C) N applied
parallel to the ramp. Find the efficiency of the ramp. Give your
answer in percent (%) and with 3 significant figures.
Gender Caff_Consumption Stress 1 5 1 1 6 3 2 7 3 1 7 2 1...
Gender
Caff_Consumption
Stress
1
5
1
1
6
3
2
7
3
1
7
2
1
5
3
1
6
1
1
8
2
1
8
2
2
9
1
2
8
1
2
9
1
2
7
2
2
4
1
2
3
1
1
0
1
2
4
2
1
5
1
2
6
2
1
2
2
1
4
3
1
5
3
2
5
3
1
4
2
1
3
2
1
7
3
2
8...
Mother's age 18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,51 Female 1, 0, 2, 2, 3, 4, 7, 3, 2, 4, 7, 1,...
Mother's age
18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,51
Female 1, 0, 2, 2, 3, 4, 7, 3, 2, 4, 7, 1, 6, 4, 5, 3, 1, 4, 0,
1, 1, 1, 0, 1, 0
Use the stem and leaf plots that you previously created to help
you draw and label histograms on your scratch paper with bin width
of 2 for mothers's age at birth of female students and for mother's
age at birth of male students. Make the lower bound of your first
bin...
4) Let ? = {2, 3, 5, 7}, ? = {3, 5, 7}, ? = {1,...
4) Let ? = {2, 3, 5, 7}, ? = {3, 5, 7}, ? = {1, 7}. Answer the
following questions, giving reasons for your answers.
a) Is ? ⊆ ??
b)Is ? ⊆ ??
c) Is ? ⊂ ??
d) Is ? ⊆ ??
e) Is ? ⊆ ??
5) Let ? = {1, 3, 4} and ? = {2, 3, 6}. Use set-roster notation
to write each of the following sets, and indicate the number of
elements in...
For the following data set [ 1, 4, 3, 6, 2, 7, 18, 3, 7, 2,...
For the following data set [ 1, 4, 3, 6, 2, 7, 18, 3, 7, 2, 4,
3, 5, 3, 7] please compute the following
1. measures of central tendency (3 points)
2. standard deviation ( 5 points)
3. is 18 an outlier? (5 points)
4. describe the shape of the distribution (2 points)
ID Affiliation Location Education Confidence 1 1 3 0 72 2 1 3 5 65 3...
ID
Affiliation
Location
Education
Confidence
1
1
3
0
72
2
1
3
5
65
3
0
4
5
66
4
0
1
4
78
5
0
3
1
81
6
1
2
5
81
7
1
1
2
83
8
1
3
3
74
9
0
4
0
78
10
0
2
2
85
11
0
1
1
85
12
1
3
5
69
13
1
2
0
69
14
1
3
2
79
15
1
4
1
82...
MONTH ZEMIN CORP. MARKET 1 7% 4% 2 2% 1% 3 2% 2% 4 -3% -1%...
MONTH ZEMIN CORP. MARKET
1 7% 4%
2 2% 1%
3 2% 2%
4 -3% -1%
5 4% 2%
6 2% 3%
a. Given the holding-period returns shown above, compute the
average returns and the standard deviations for the Zemin
Corporation and for the market.
b. If Zemin's beta is 1.04 and the risk-free rate is 9
percent, what would be an appropriate required return for an
investor owning Zemin? (Note: Because the returns of Zemin
Corporation are based on...
Find the distance from (2, −7, 7) to each of the following. (a) the xy-plane (b)...
Find the distance from
(2, −7, 7)
to each of the following.
(a) the xy-plane
(b) the yz-plane
(c) the xz-plane
(d) the x-axis
(e) the y-axis
(f) the z-axis
Briefly (2-3 sentences) describe the location of nephrons within the kidney, and relate their location with...
Briefly (2-3 sentences) describe the location of nephrons within
the kidney, and relate their location with a gross morphological
feature of the kidney (i.e. how can you relate the location and
orientation of nephrons to a feature/features that you can observe
with the naked eye).
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