Mean and Mode
Median and Range
Outliers
Probability
Tree Diagrams
100
What is the mode?
The mode is the number that occurs most often.
100
What is the median?
The median is the middle number when the data are arranged in order.
100
What is an outlier?
A number in a data set that is significantly different from the other numbers.
100
Name three different ways to express probability.
Fractions, percent, and ratio
100
How many outcomes are there if you roll a 6 sided dice and toss a coin (2 sided)?
12 outcomes
200
How do you find the mean?
You add up all of the numbers in a set and divide by the number of numbers.
200
How do you find the range?
You take the highest number in a data set and minus the lowest number.
200
What is the outlier: 1, 3, 5, 21
The outlier is 21
200
What is the probability of rolling a 3 on a dice?
1/6 or 16.6%
200
How many outcomes are there if you roll a 4 sided dice and toss a coin (2 sided)
8 outcomes
300
Find the mean: 2, 3, 9
The mean is 5.
300
Find the range: 3, 23, 9, 10, 20, 4, 2, 18, 17, 6, 11
The range is 21
300
Calculate the mean: 2, 4, 12 Now take out the outlier and calculate the mean. How does the mean change?
The mean decreases (it goes from 6 to 3).
300
What is the probability of rolling a 4 or 6 on a dice?
2/6 or 33.3%
300
There is a 6 sided dice and a coin. What is the probability of rolling a 1-Heads.
1/12 or 8%
400
Find the mode: 10, 4, 7, 11, 12, 9, 14, 5, 8, 9, 23, 31
No mode.
400
Find the median: 4, 14, 8, 6, 12, 10, 16
The median is 10
400
True or false: Identifying outliers is a matter of choice
True! (Pg 267)
400
What is the probability of NOT rolling a 1 or 5 on a dice?
4/6 or 66.6%
400
There is a 6 sided dice and a coin. What is the probability of NOT rolling a 2-Heads or a 2-Tails?
10/12 or 83.3%
500
Find the mean: 1, 1.5, 2, 2.5, 3
The mean is 2
500
Explain the following: the median might not be one of the numbers in the data set.
For example: 4, 6, 8, 10 You would take 6+8 which equals 14 and divide by 2 which equals 7. The number 7 is not in the data but it is the answer.
500
Find the median: 6, 3, 5, 41, 1 Now take out the outlier and find the median. How does it change?
The median decreases (5 to 4).
500
There is an 8 sided dice (1 to 8). Find the probability of rolling a 2 or 7. Express your answer as a fraction and percent.
2/8 or 25%
500
There is an 8 sided dice and a coin. What is the probability of rolling a number 7 or a heads?
9/16 or 56%
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