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Review of Chance and Data - AS 1.12 Flashcards | StudBud
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Review of Chance and Data - AS 1.12
Review of Chance and Data - AS 1.12
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Chance and Data
Flashcards
26 cards
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Questions
26
Answers
1
What is the probability of choosing a female?
7/12
46/109
53/121
7/53
2
What is meant by a fair game?
The chance of winning is higher than losing
All outcomes are equally likely
If there are 3 outcomes the probability of winning = 2/3
The chance of losing is higher than winning.
3
Describe any repeating patterns in Timber production over the 6 years.
Timber sales are increasing over the 6 years
Timber production is highest every 2nd quarter.
The lowest sales are in the first quarter each year.
Timber sales went over 20000 tonnes in 2004
4
Describe any overall trends in Timber production over the 6 years.
Timber sales went over 20000 tonnes in 2004
Timber production is highest every 2nd quarter.
The lowest sales are in the first quarter each year.
Timber sales are increasing over the 6 years
5
There are 30 students in both classes. To decide which has better results what do you do?
Compare DBM with 1/3 Overall Visible Spread
Compare Distance Between Medians with 1/4 OVS
Compare the distance between medians with 1/2 OVS
Compare DBM with 1/5 Overall Visible Spread
6
Which is the definition of mean?
The most common result
The middle result when they are in order
Subtract the highest score from the lowest
Add all results and divide by how many there are
7
If you chose two kids, what is the probability they will have a fish and a bird?
8/24 x 4/24
8/24 x 4/23 + 4/24 x 8/23
2 x 8/24 x 4/24
8/24 x 4/23
8
What type of graph is this?
Scatter
Time Series
Histogram
Line
9
Use the line of best fit to estimate the height of a person with an armspan of 130cm.
125cm
140cm
135cm
130cm
10
What is the probability of choosing a left-handed male?
5/121
68/121
5/68
5/12
11
What is the probability a kid will have a pet with fur?
7/24
1/6
0.458
50%
12
What comments can you make about Angela's and Carl's results?
Carl's box is wider so he has better results
Carl is better because he has the highest maximum of 62
Angela is worse because she got 0 sales one week.
Boxes overlap and medians too close to say Carl is better
13
What does OVS mean?
Overall Visible Spread
Outlier Very Small
Overall Visible Statistics
Overall Very Small
14
What does DBM mean?
Distance Between Means
Distance Between Medians
Distance Between Middles
Distance Between Modes
15
If you choose two people, what is the probability they will be both males?
68/121 + 67/120
68/121
68/121 x 68/121
68/121 x 67/120
16
What is the upper quartile for Angela's number of sales per week?
46
27
18
42
17
Estimate the relationship between height of a person and shoe size.
Shoe size increases by 2 for 10cm height increase.
The shoe size increases by 4 for 10 cm height increase
Shoe size doubles every 10cm height increase.
Shoe size increases by half for every 10 cm height increase.
18
What can you say about the distribution of this graph?
The median and mode are both 50 matches per box
The range is 7 matches
The most number of matches in a box is 50
The mode is 7 matches per box
19
What can you say about the distribution of this graph?
The distribution is symmetrical
The graph is skewed to the left
The graph is bi-modal
The graph is skewed to the right
20
The probability that a box has 47 matches in it is
0.1
0.02
0.01
0.2
21
What is the probability that you will achieve in the external exam next week?
not very likely
almost certain
impossible
1/2
22
If you choose a female, what is the probability she is right-handed?
46/121
7/53
46/53
46/109
23
What is the probability a kid will have a dog?
1/5
1/6
0.25
33%
24
Estimate the inter-quartile range for Carl's number of sales per week?
24
56
31
60
25
Which type of graph best shows the relationship for BIVARIATE data?
Box and Whisker
Bar
Scatter
Time Series
26
What is the sample space if I am tossing a coin?
Tail, Tail
Head, Tail
Head, Head
Head
