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Probability & Statistics (Grade 9 Unit 9)-SJAM Flashcards | StudBud
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Probability & Statistics (Grade 9 Unit 9)-SJAM
Probability & Statistics (Grade 9 Unit 9)-SJAM
36 terms
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176 plays
#9 Math #SJAM #Probability #Statistics
Flashcards
36 cards
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Practice quiz
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Questions
36
Answers
1
How many people were surveyed in this study?
10
20
40
100
2
What sampling method is described below?
Interval Sampling
Stratified Random Sampling
Convenience Sampling
Self-Selected Sampling
3
I want to find out what percent of students in my school like pizza. What's the best sample?
Ask 5 boys and 5 girls from each class
Ask all students in Home Economic class
Ask all the boys in my school
Ask students in the cafeteria on pizza day.
4
What sampling method is described below?
Stratified Random Sampling
Self-Selected Sampling
Cluster Sampling
Interval Sampling
5
What is the probability of landing on BLUE
83.3 %
50 %
20 %
16.7 %
6
A car factory needs to test it's seat belts. Should they do a...
Sample
Census
7
What sampling method is described below?
Cluster Sampling
Simple Random Sampling
Interval Sampling
Stratified Random Sampling
8
I ask my class "Do you prefer boring country music or exciting rock music?". This is a...
Cost problem
Use of language problem
Privacy problem
Timing problem
9
Write as a fraction in lowest terms
26 / 100
1 / 3
0.26
13 / 50
10
I ask my students to do an hour long survey during their lunch break. This is a...
Use of language problem
Timing problem
Privacy problem
Time problem
11
What is the experimental probability of getting yellow?
7/11
1/5
11/25
11/15
12
Write this fraction as a percent
30%
25%
33.3...%
28.57%
13
I send a survey out to all families in my school community by mail. This is a...
Use of language problem
Timing problem
Cultural sensitivity problem
Cost problem
14
Mary thinks she has a 50% of winning a coin toss. This is...?
Experimental Probability
Theoretical Probability
Subjective Judgement
15
What sampling method is described below?
Simple Random Sampling
Cluster Sampling
Systematic Interval Sampling
Convenience Sampling
16
The Vipers won all games this year. They expect to win next. What is NOT a related assumption?
Their coach is not sick
Court conditions are as good as they have been all season
The opposing team is not better than others they've played
The crowd who come to watch is 40% men and 60% women
17
I want to find out how many of the 500 students in my school want a pajama day. Should I do a;
Census
Sample
18
I ask my students what they got for Christmas. This is a...
Time problem
Cultural Sensitivity problem
Timing problem
Use of language problem
19
What percent of people surveyed like Romance movies?
6 %
30 %
13 %
60 %
20
What is the probability of landing on a 7?
7
1/2
0
1
21
I ask my class who their favorite hockey team is the day after Montreal wins the cup. This is a
Cost problem
Cultural sensitivity problem
Timing problem
Time problem
22
DJ was late every day this year. His teacher predicts he'll be late tomorrow. This is...?
Theoretical Probability
Subjective Judgement
Experimental Porbability
23
I ask my class to raise their hand if they failed the last test. This is a...
Timing problem
Cost problem
Use of language problem
Privacy problem
24
What sampling method is described below?
Stratified Random Sampling
Interval Sampling
Simple Random Sampling
Convenience Sampling
25
I got 100 on all tests this year. I expect 100 on the next. Which is NOT an assumption I make?
I studied the same amount for all tests
All tests are equally difficult
The cafeteria is serving hot dogs that day
I am feeling as well as I did for the other tests
26
What is the probability of landing on a PERFECT SQUARE Number?
1 / 3
1 / 2
1 / 6
2 / 3
27
What is the experimental probability of getting Red OR Green?
10 %
40 %
73 %
15 %
28
I want to find out how many cars drive down my street each day. What would be the best sample?
Count cars that drive by from 8 AM to 9 AM
Watch for 24 hours and count every car that drives by
Count cars that drive by in 20 minute intervals every hour
Count cars that drive by from 8 PM to 9 PM
29
I want to find out how many students at my school like volleyball. What is the population?
All students who are on a volleyball team
All students who go to my school
All students in my city
All students in my class
30
I want to find how many of 30 students need help with their homework. Should I do a...
Census
Sample
31
The sample chosen was every 20th person entering a Romance movie? What sampling method is this?
Systematic Interval Sampling
Stratified Random Sampling
Self-Selected Sampling
Simple Random Sampling
32
The sample chosen was every 20th person entering a Romance movie? Are these results valid?
No
Yes
33
What percent of people surveyed prefer Comedy movies?
40 %
20 %
4 %
50 %
34
What sampling method is described below?
Stratified Random Sampling
Interval Sampling
Simple Random Sampling
Convenience Sampling
35
Which represents this set of numbers?
1, 1.2, 1.4, 3.4
100%, 50%, 25%, 75%
100, 0.5, 0.25, 0.75
1%, 50%, 25%, 75%
36
How many people like Drama OR SciFi?
20
1
4
5
