Question
In: Economics
Imagine that we are only given the following frequencydistribution: class f 46-50 3 51-55 6...
Imagine that we are only given the following frequency distribution: class f 46-50 3 51-55 6 56-60 3 What is the estimated arithmetic mean?
Solutions
Expert Solution
46-50, midpoint is = 48
51-55, midpoint is = 53
56-60, midpoint is = 58
Multiply each midpoint by the frequency =
48*3 = 144
53*6 = 318
58*3 = 174
Add the results from Step above and divide the sum by 12
= 636/12 = 53
Rahul Sunny answered 1 year agoRelated Solutions
1e) Use the given data to compute the following statistic: 46, 51, 63, 65, 74, 46,...
1e) Use the given data to compute the following statistic: 46,
51, 63, 65, 74, 46, 58, 70, 43 The 85th percentile... P85
1f) Use the given data to compute the RANGE: 46, 51, 63, 65, 74,
46, 58, 70, 43
1g) Use the given data to compute the VARIANCE: 46, 51, 63, 65,
74, 46, 58, 70, 43
1h) Use the given data to compute the STANDARD DEVIATION: 46,
51, 63, 65, 74, 46, 58, 70, 43
No Handwriting...
1e) Use the given data to compute the following statistic: 46, 51, 63, 65, 74, 46,...
1e) Use the given data to compute the following statistic: 46,
51, 63, 65, 74, 46, 58, 70, 43 The 85th percentile... P85
1f) Use the given data to compute the RANGE: 46, 51, 63, 65, 74,
46, 58, 70, 43
1g) Use the given data to compute the VARIANCE: 46, 51, 63, 65,
74, 46, 58, 70, 43
1h) Use the given data to compute the STANDARD DEVIATION: 46,
51, 63, 65, 74, 46, 58, 70, 43
No Handwriting...
Control 5 mg 10 mg 50 51 60 48 51 58 46 49 57 51 53...
Control
5 mg
10 mg
50
51
60
48
51
58
46
49
57
51
53
61
53
52
61
47
46
64
Above are the results of a drug trial. The scores are
given for subjects in three different conditions – a placebo
control, 5 mg and 10 mg of the drug. Please run the appropriate
test in SPSS using p-value or traditional hypothesis testing method
and choose the alpha or p-value. If the results are statistically
significant, please...
The number of goals scored by Wayne Gretzky was recorded for seasons 1978-1999. 46, 51, 55,...
The number of goals scored by Wayne Gretzky was recorded for
seasons 1978-1999. 46, 51, 55, 92, 71, 87, 73, 52, 62, 40, 54, 40,
41, 31, 16, 38, 11, 23, 5, 23, 9 What is the average number of
goals scored by Wayne Gretzky? What is the standard deviations of
the number of goals? Draw a stem-and-leaf plot (by hand) Roughly,
how would you describe the shape of the graph? Calculate the 3
quartiles (Q1, Q2 = median, Q3)?...
Let F(x)=f(f(x)) and G(x)=(F(x))^2 . You also know that f(6)=14,f(14)=3,f′(14)=4,f′(6)=3. Find F′(6)= and G′(6)= .
Let F(x)=f(f(x)) and G(x)=(F(x))^2 . You also know that
f(6)=14,f(14)=3,f′(14)=4,f′(6)=3.
Find F′(6)= and G′(6)= .
Construct a Box Plot for the given data: 20, 32, 55, 88, 38, 98, 42, 46,...
Construct a Box Plot for the
given data: 20, 32, 55, 88, 38, 98, 42, 46, 32, 21, 18,
20
Two dice are rolled. Find the
probability of getting:
A sum of 8, or 9, or 10
Doubles or a sum of 7
A sum greater than 9 or less than 4
Based on the answers above, which is least likely to
occur?
Given the following grouped frequency distribution Data Frequency 50 - 54 12 55 - 59 23...
Given the following grouped frequency distribution
Data
Frequency
50 - 54
12
55 - 59
23
60 - 64
11
65 - 69
8
70 - 74
5
75 - 79
7
80 - 84
3
85 - 89
1
90 - 94
1
Find the mean (give you answer to one decimal) =
Find the standard deviation (give your answer to two decimals)
=
What is the shape of this distribution? Your answer will be hand
graded.
The following data set is the ages of 15 random professors. 46 51 60 58 37...
The following data set is the ages of 15 random professors.
46 51 60 58 37 65 43 55 30 68 25 62 56 42
59
a) Find the mean
b) Find the mode
c) Give the five number summary
d) Are they any outliers? If so, what are they?
Use the following class for the following problem. The only purpose of the class is to...
Use the following class for the following problem. The only
purpose of the class is to display a message both when the
constructor is invoked and when the destructor is executed.
class Trace
{
public:
Trace(string n);
~Trace();
private:
string name;
};
Trace::Trace(string n) : name(n)
{
cout << "Entering " << name << "\n";
}
Trace::~Trace()
{
cout << "Exiting " << name << "\n";
}
Requirement:
Extend the class Trace with a copy constructor and an assignment
operator,...
2. The following represents 50 test scores on an exam. 49, 48, 51, 50, 53, 52,...
2. The following represents 50 test scores on an exam.
49, 48, 51, 50, 53, 52, 55, 54, 57, 56, 59, 58, 61, 60, 63, 62,
65, 64, 67, 66, 69, 68, 71, 70, 73, 72, 75, 74, 77, 76, 79, 78, 81,
80, 83, 82, 85, 84, 87, 86, 89, 88, 91, 90, 93, 92, 95, 94, 97,
96
Find the position of the median
Find the 67th percentile
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