2HW5A-统计代写
时间:2023-12-05
01/11/2020 2HW5A Tables and charts-Ahmad Daryanto
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1.
Student: _____________________
Date: _____________________
Instructor: Ahmad Daryanto
Course: MKTG100 Numeracy and Stats Assignment: 2HW5A Tables and charts
Twenty-five students were asked to state their year of birth.
The information was given to the right.
Produce a tally chart to organise this data and state the
frequency of occurrence of each year of birth.
1922 1920 1921 1920 1926
1926 1926 1926 1921 1923
1926 1924 1925 1925 1920
1924 1920 1924 1921 1925
1924 1921 1922 1923 1926
Select the tally from the given table
Year Tally Frequency
1920
1921
1922
1923
1924
1925
1926
Total
                                   (Type whole numbers.)
01/11/2020 2HW5A Tables and charts-Ahmad Daryanto
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2.
(1) first class.
fourth class.
third class.
second class.
(2) first class.
third class.
second class.
fourth class.
Consider the following table, which shows the
lifetimes, to the nearest hour, of 100 energy saving
light bulbs.
(a) If a light bulb has a life of hours into which
class will it be put?
7999.6
(b) If a light bulb has a life of hours into which
class will it be put?
8599.4
(c) State the class boundaries of each class.
(d) Find the class width.
(e) State the class midpoint of each class.
Lifetime (hours) Frequency
-8000 8299 8
-8300 8599 29
-8600 8899 47
-8900 9199 16
Total 100
(a) It will come under (1)
(b) It will come under (2)
(c)
i) The class boundaries of the first class are and .
ii) The class boundaries of the second class are and .
iii) The class boundaries of the third class are and .
iv) The class boundaries of the fourth class are and .
(Use ascending order for class boundaries. Round to one decimal place as needed.)
(d) The difference between the upper class boundary and the lower class boundary in each class is .
(Type an integer or a decimal.)
(e) Lifetime (hours) Midpoint
-8000 8299
-8300 8599
-8600 8899
-8900 9199
         (Round to one decimal place as needed.)
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3. The data in the table below gives the radius of 20 ball bearings. State the class boundaries of the second class and find the
class width.
Radius (mm) Frequency
60.64-60.73 2
60.74-60.83 6
60.84-60.93 8
60.94-61.03 4
The upper class boundary of the second class is . The lower class boundary is .
(Round to three decimal places as needed.)
The difference between these values gives the class width, that is, .
(Round to two decimal places as needed.)
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4. A local council wants to produce a leaflet explaining how the council tax is spent. For every one pound spent, p went to
Education, p went to the Police, p went to Cleansing and Refuse, p went to Highways and the remaining
p went to a variety of other services. Show this information
12.5
12.5 17.5 17.5 40
(a) using a pie chart, and (b) using a pictogram.
(a) Choose the correct pie chart for the relative frequency.
Education
Police
Cleansing and refuse
Highways
Other services
Education
Police
Cleansing and refuse
Highways
Other services
Education
Police
Cleansing and refuse
Highways
Other services
Education
Police
Cleansing and refuse
Highways
Other services
(b) From the below pictogram, the number of objects drawn
represents the number of pence for the particular category, (i.e. = 10 p).
Choose the correct pictogram for the corresponding frequency.
Education
Police
Cleansing and refuse
Highways
Other services
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5.
(1) fifth
first
second
third
fourth
An insurance company keeps records on the
distribution of the amount of small claims for theft it
receives. Amounts are given to the nearest pound.
This information is given in the table to the right.
(a) State the class boundaries.
(b) In which class would a claim for be placed?£405.5
(c) Draw a histogram to show this information.
  Amount ( )£   Frequency
201-250 3
251-300 18
301-350 7
351-400 15
401-450 23
(a)
i) The class boundaries of the first class are and .
ii) The class boundaries of the second class are and .
iii) The class boundaries of the third class are and .
iv) The class boundaries of the fourth class are and .
iv) The class boundaries of the fifth class are and .
(Use ascending order for class boundaries. Round to one decimal place as needed.)
(b) The claim for can be placed in (1) class.£405.5
(c) Select the histogram showing the distribution of the amount given for small claims to that of the no.of persons. The
horizontal bar represnt amount range. The bar labels are A: - , B: - , C: - , D: - ,
E: - .
200.5 250.5 250.5 300.5 300.5 350.5 350.5 400.5
400.5 450.5
A.
A B C D E0
6
12
18
24
30
N
o.
o
f p
er
so
ns
B.
A B C D E0
6
12
18
24
30
N
o.
o
f p
er
so
ns
C.
A B C D E0
6
12
18
24
30
N
o.
o
f p
er
so
ns
D.
A B C D E0
6
12
18
24
30
N
o.
o
f p
er
so
ns
01/11/2020 2HW5A Tables and charts-Ahmad Daryanto
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6. The histogram shows information about the time it took for some students to finish their exam. Answer the following
questions.
a. How many students took the exam?
(Simplify your answer.)
b. How many students took between 30 and 60 minutes?
(Simplify your answer.)
c. Find an estimate for the median amount of time taken.
An estimate for the median amount of time taken is minutes.
(Round to one decimal place as needed.)
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7. A travel agent kept a record of the destinations of those customers who travelled
abroad in 2018 and put the information into a pie chart.
a. Find the missing angle for Greece.
b. If 432 people travelled in the year, how many went to each country?
France 60°
Spain 100°
Other 50°
USA 45°
UK 35°
Greece
a. The missing angle for Greece is .°
(Simplify your answer. Do not include the degree symbol in your answer.)
b. Determine the number of people that went to each country.
(Simplify your answers.)
France
Spain
Greece
UK
USA
Other
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