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Probability & Statistics Flashcards | StudBud
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Probability & Statistics
Probability & Statistics
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Questions
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Answers
1
What is the missing cumulative frequency?
11
15
12
56
2
Calculate the Cumulative Frequency column.
6, 11, 7, 10
5, 9, 4, 6
5, 14, 18, 24
5, 14, 4, 6
3
Find the probability
D
C
A
B
4
Cumulative Frequency
60
120
30
90
5
How do we calculate Frequency Density?
Frequency / class width
Frequency x Class Width
upper bound - lower bound
Class Width / Frequency
6
Cumulative Frequency
5.50
4.60
4.10
5.10
7
Find the probability.
B)
D)
A)
C)
8
Which group has a frequency density of 50?
20≤d<40
10≤d<20
60≤d<100
20≤d<30
9
What correlation is this?
Strong Negative
Positive
No Correlation
Weak Negative
10
Describe the correlation.
strong positive correlation
strong negative correlation
weak positive correlation
weak negative correlation
11
Find the frequency density of the 1st class
4
0.025
0.25
2.5
12
What is the cumulative frequency of the 79-87 group?
16
22
10
135
