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Name __________________________
Quarter 2 Exam Review Sheet
Date _____ Class _____
Mr. Lynch
1) The closing prices of two stocks are recorded below:
ABC 78
78
76
75
74
78
76
76
77
DEF 54
67
57
57
65
87
56
74
54
a) Calculate the coefficient of variation for each stock.
b) If you are a conservative investor, which of the two stocks would you
invest in?
2) Use the following data values to answer the questions which follow:
67
65
64
66
66
66
66
69
70
71
a) Use Chebyshev's Theorem to calculate the interval under which 99% of
the data will fall.
b) Use Chebyshev's Theorem to calculate the interval under which 75% of
the data will fall.
c) Use Chebyshev's Theorem to calculate the interval under which 93.8%
of the data will fall.
3) Use the following values to answer the questions that follow:
79
58
67
49
23
79
67
39
86
a) x bar = _____
b) median = _____
d) range = _____
e) variance = _____
f) s = _____
c) mode = _____
79
23
g) σ = _____ h) x = _____ i) x2 = _____
4) Use the following values to calculate a 5% and 10% trimmed mean:
79
83
79
87
98
37
98
47
98
37
69
83
76
98
37
69
83
79
98
67
13
96
79
83
06
79
82
84
38
90
40
33
78
78
67
68
76
98
73
90
5) Find the mean & standard deviation when given the following repeated data:
x
f
xf
x - x bar
(x - xbar)2
(x - xbar)2f
10
101
11
104
12
155
13
100
=
=
=
6) Find the mean & standard deviation when given the following grouped data:
Class
x
f
xf
x - x bar
(x - xbar)2 (x - xbar)2f
11 - 15
85
16 - 20
87
21 - 25
88
26 - 30
81
=
=
=
7) In your physics course, your grade is calculated based on the following categories
attendance (5%), class participation (10%), homework (25%), tests (25%), quizzes
(20%), and presentation (15%). Your grades in the following were as follows, attendance
– 100, class participation – 95, homework - 86, tests - 78.6, quizzes – 92, and
presentation – 88. Find your weighted average.
8) The test grades for students in Jesus & Film are as follows:
57
89
75
98
10
37
98
05
63
18
47
69
83
16
98
32
79
68
52
37
69
81
73
69
87
31
88
67
91
83
76
98
38
a) Calculate the median rank.
_________________
b) Calculate the IQR.
_________________
c) Construct a box-and whisker plot to display the data.
9) Paul has a choice of 4 SFP polo shirts (pink, blue, red, teal). He also has a choice of 3
pairs of pants (khaki, blue, black) and 3 shoes (black, brown, white).
a) Construct a tree diagram of all Paul's possible outfits.
b) Find:
P(blue shirt) = __________ P(pink and khaki) = __________
P(brown shoes or white shoes) = __________
P(pink, khaki, and white) = __________
P(white shirt) = __________
10) Complete the chart below and answer the questions:
f
52
53
51
54
51
50
Σ=
x
1
2
3
4
6
7
fx
x – x bar
(x – x bar)2
Σ=
a) Calculate the mean, variance, and standard deviation.
(x – x bar)2f
Σ=
11) Reels Inc. makes fishing rods. The company is doing research on their current
fishing rods. They are looking specifically at price. The results are shown in the table
below:
Price (dollars)
15
20
25
30
35
40
45
Frequency Sold
18
48
72
94
86
51
23
a) Complete the table below.
x
11
12
13
14
15
16
17
f
18
48
72
94
86
51
23
=
P(x)
xP(x)
=
=
x-μ
(x - μ)2
(x - μ)2P(x)
=
b) Expected Value = ___________________
c) Standard Deviation = ________________
d) Variance = __________________
e) Construct a histogram to display the data
e) What is the distribution shape of the histogram (if any)? ____________
f) Find:
P(30) = __________
P(15 to 17) = ________
P(below 14) = _________
P(above 13) = _____
P(at or above 15) = ________