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Probability and Statistics Flashcards | StudBud
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Probability and Statistics
Probability and Statistics
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1
A coach wants to find the most common sprint time among runners. Which measure should they look at?
Range
Mode
Median
Mean
2
A teacher wants to see how individual students performed on a test. Which display would be more useful?
Box plot
Stem-and-leaf plot
Histogram
Pie chart
3
You spin the following spinner. What is the probability of it landing on a number greater than 4?
\frac{4}{6}
\frac{2}{6}
\frac{3}{6}
\frac{1}{3}
4
What is the range of the following data set: 2, 5, 7, 9, 12, 12, 20
9
12
18
20
5
A basketball team's scoring data has a very small range. What does this mean?
They are very inconsistent
They score about the same every game
Their scores are skewed
Their average score is high
6
Two classes have the same mean but different ranges. What does that mean?
One class is more consistent
One mean is wrong
Same performances
One class is bigger
7
What happens to the mean if one extremely low value is added to the data set?
Mean becomes the median
Mean decreases
Mean increases
Mean stays the same
8
What is the sample space?
Only one outcome
The winning outcome
All possible outcomes
The smallest outcome
9
Which display is best to show the
spread
of data?
Histogram
Stem-and-leaf
Pie chart
Box and whisker plot
10
If a class has a small range of scores, what does this mean?
Very inconsistent scores
Two separate groups
High average
Scores are close together
11
The median is usually better to use when there are outliers.
True
False
12
What is the median of the following data set: 12, 14, 14, 17, 23, 26, 30
14
30
17
12
13
In a stem-and-leaf plot, if most numbers are low, what does that tell you?
Most of the data is small
Data is skewed left
Mean is bigger than the median
No one did well
14
Probability is most useful when you want to make a fair decision based on chances.
False
True
15
Probability is the measure of how likely an event is to occur.
False
True
16
What is the complement of an event?
The event not happening
The more likely event
The event happens twice
The same event
