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