Question
In: Statistics and Probability
The following data represent the profit in thousands over the last 60 months, of an SME...
The following data represent the profit in thousands over the
last 60 months, of
an SME
142
123
109
124
142
117
108
106
103
114
91 102 108 110 83 90 69 117 84 122 113 105 112 117 122 129 100
138
99 106 102 115 120 120 117 122 111 119 109 125 108 116 105 117
114 101 99 112 120 108 91 115 105 99 122 106 113 114 75 96
(a) Make a frequency table with seven classes showing class
limits, class boundaries, midpoints, frequencies, and relative
frequencies.
(b) Draw a histogram.
(c) Draw a relative-frequency histogram. (d) Identify the
shape of the distribution. (e) Draw an ogive
Solutions
orchestra answered 3 years agoRelated Solutions
The following data shows the price of PAO, Inc. stock over the last eight months. Month...
The following data shows the price of PAO, Inc. stock over the
last eight months. Month Price ($) 1 2.44 2 2.44 3 2.45 4 2.43 5
2.44 6 2.45 7 2.44 8 2.47 2. What kind of relationship exists
between stock price and time (negative, positive, or no relation)?
3. In month 4, a new marketing campaign began. If stock price is an
indicator of the campaign's success, was the campaign a
success?
The following data represent the salaries (in thousands of dollars) of a sample of 13 employees...
The following data represent the salaries (in thousands of
dollars) of a sample of 13 employees of a firm: 26.5, 23.5, 29.7,
24.8, 21.1, 24.3, 20.4, 22.7, 27.2, 23.7, 24.1, 24.8, and
28.2.
Calculate the interquartile range. What does this tell you
about the data? Show your work.
Describe the shape of distribution of salaries of employees of
the firm based on the values of the quartiles.
Give a possible reason for the shape of this data set, in terms...
The following data represent the daily supply (y in thousands of units) and the unit price...
The following data represent the daily supply (y in
thousands of units) and the unit price (x in dollars) for
a product.
Daily Supply (y)
Unit Price (x)
5
2
7
4
9
8
12
5
10
7
13
8
16
16
16
6
a.
Compute and interpret the sample covariance for the above
data.
b.
Compute the standard deviation for the daily supply.
c.
Compute the standard deviation for the unit price.
d.
Compute and interpret the sample...
The following data (read the data down first and then over to the right) represent the...
The following data (read the data down first and then over to
the right) represent the weekly accounts receivable balance (in
$1000) of a hardware distributor over a 30-week period.
128.703
120.649
126.215
129.426
135.816
125.131
131.122
121.774
125.367
121.076
119.848
127.251
153.923
125.658
122.172
129.268
122.912
125.351
130.572
116.875
122.587
127.677
132.364
130.950
118.662
131.902
132.220
128.522
132.270
122.671
Set up a (individuals) control chart on the accounts balance
and a moving range chart (i.e. calculate the appropriate centerline...
The following data shows the quarterly profit (in thousands of dollars) made by a particular company...
The following data shows the quarterly profit (in thousands of
dollars) made by a particular company in the past 3 years.
Year
Quarter
Profit ($1000s)
1
1
45
1
2
51
1
3
72
1
4
50
2
1
49
2
2
45
2
3
79
2
4
54
3
1
42
3
2
58
3
3
70
3
4
56
a. Use α = 0.3 to
compute the exponential smoothing values for the time series.
Compute MSE and the forecast...
The following data shows the quarterly profit (in thousands of dollars) made by a particular company...
The following data shows the quarterly profit (in thousands of
dollars) made by a particular company in the past 3 years.
Year
Quarter
Profit ($1000s)
1
1
45
1
2
51
1
3
72
1
4
50
2
1
49
2
2
45
2
3
79
2
4
54
3
1
42
3
2
58
3
3
70
3
4
56
a. Use α = 0.3 to compute the
exponential smoothing values for the time series. Compute MSE and
the...
Thomas Train has collected the following information over the last six months.
Thomas Train has collected the following information over the
last six months.MonthUnits producedTotal costsMarch10,000$25,600April12,00026,200May19,60028,000June13,00026,450July12,00026,000August15,00026,500Using the high-low method, what is the variable cost per
unit?Round to two decimal places.
A stock records the following returns over the last 6 months. What are the arithmetic...
A stock records the following returns over the last 6
months.
What are the arithmetic returns for the stocks?
What are the geometric returns for the stocks?
What are the variances for the stocks?
What are the standard deviations for the stocks?
Compute the coefficient of variation of stocks.
Which stock would you choose? Why?
YEAR
Returns of the Stock
1
R
Variances
σ2
YEAR
Returns of the Stock
2
R
Variances
σ2
1
6.31%...
The following information is available for a company’s maintenance cost over the last seven months. Month...
The following information is available for a company’s
maintenance cost over the last seven months.
Month
Maintenance Hours
Maintenance Cost
June
11
$
5,050
July
17
6,850
August
13
5,650
September
16
6,550
October
22
8,350
November
25
9,250
December
7
3,850
Using the high-low method, estimate both the fixed and variable
components of its maintenance cost.
High-Low method - Calculation of variable cost per maintenance
hour
Change in cost
Cost at high point minus cost at low point
Variable...
The following information is available for a company’s maintenance cost over the last seven months. Month...
The following information is available for a company’s
maintenance cost over the last seven months.
Month
Maintenance Hours
Maintenance Cost
June
10
$
3,950
July
19
5,390
August
11
4,110
September
14
4,590
October
20
5,550
November
23
6,030
December
5
3,150
Using the high-low method, estimate both the fixed and variable
components of its maintenance cost.
High-Low method - Calculation of variable cost per maintenance
hour
Total cost at the high point
Variable costs at the high point:...
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