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Probability and Statistics Summative Review Flashcards | StudBud
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Probability and Statistics Summative Review
Probability and Statistics Summative Review
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Probability and Statistics review
Flashcards
26 cards
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Questions
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Answers
1
Which of the following statements best describes a biased sample?
It is very small
It is not randomly chosen
It results in incorrect predictions
It does not accurately represent the population.
2
100 students were asked about their favorite subject. What can you infer about the results?
6th graders prefer reading than social studies.
Twice as many 8th graders prefer math than reading
Half of the 7th graders prefer math or social studies
About half the 8th graders prefer science
3
What is the mean score for Lindsey’s class?
79.1
75
80.2
78
4
There are 1200 students in the school. About how many votes can candidate C expect to receive?
204
384
34
612
5
Use experimental probability to predict how many fish in the pond are striped.
50
100
200
80
6
What is the experimental probability for rolling a number greater than 3?
3/10
2/5
4/5
1/10
7
All grade 8 students take a math test. Which samples are NOT representative of the population.
50 students in grade 7 math classes
40 students who perform well in math class
45 students who have the same lunch period
35 students whose birthdays are in November
8
What is the lower quartile?
3
6
4
7
9
What is the theoretical probability for rolling a number less than 3 on a die
1/6
2/6
4/6
3/6
10
What's the probability that the first 2 cards drawn from a deck will be red? (with replacement)
1/3
1/4
2/52
1/2
11
Estimate the number of dolphins in the area.
45
75
30
188
12
There are 1200 students in the school. About how many votes can candidate B expect to receive?
204
612
384
64
13
What's the mean?
18.8
19.0
20.0
17.5
14
You made 4 out of 20 hits at bat. Predict how many hits you will make if you bat 120 times.
20
24
600
4
15
What is the mode score for Lindsey’s class?
50
80
62
99
16
A jar contains 16 red, 28 blue, 17 black, and one yellow marble. What's the probability of red?
17/62
1/62
14/31
8/31
17
Julie earned a 70 on the test. Describe how her score compares with those of her classmates.
about 75% scored higher; about 50% scored lower
about 75% scored higher; about 25% scored lower
about 25% scored higher; about 75% scored lower
about 50% scored higher; about 50% scored lower
18
What is the interquartile range?
7
4
6
3
19
What is the probability of rolling a number greater than 2 on a die?
2/3
1/3
4/6
5/6
20
What is the theoretical probability for rolling a 2 on a die
1/2
3/6
2/6
1/6
21
What is the upper quartile?
3
7
4
6
22
What is the experimental probability for rolling a 2?
4/5
2/10
1/10
2/5
23
How many defective donuts will be produced during the bakers shift?
10
20
40
0.1
24
What is the median, lower quartile, and interquartile range?
median: 5, lower quartile: 1, IQ range: 5
median: 2, lower quartile: 5, IQ range: 3
median: 7, lower quartile: 2, IQ range: 5
median: 5, lower quartile: 2, IQ range: 5
25
What is the median score for Lindsey’s class?
85
75
79
80
26
What's the mean?
19.1
18.83
17.3
18.5
