Probability
Frequency Data Tables
Central Tendency
100
What is the Probability I roll a 6?
1/6
100
What is a frequency
The number of times a data value occurs
100
What is a median?
The middle value of a data set, numbers are in order from least to greatest
200
What is probability?
The likelihood of something happening .
The chances that an event will occur
200
Number of Pets Frequency
0 4
2 6
4 7
6 3
What percent of people have 4 pets or more?
10/20 , 50%
200
What is range?
the difference between the largest number and the smallest number within a data set
300
What is the probability formula?
Number of Ways it can Occur
DIVIDED
TOTAL NUMBER OF OUTCOMES
300
What percent of people had 3 bathrooms?
What percent of people had 4 or more bathrooms?
3 bathrooms : 5 out of 66
0.075 x100 = 7.57
300
what is mode?
The most frequent number in a data set
(number the occurs most often)
400
there are 5 marbles in a bag: 4 are blue, and 1 is red. What is the probability that a blue marble gets picked?
4/5 or 0.8 or 80%
400
How do you solve a frequency table problem?
You should add up all frequencies in the table
and create the fraction
on top is the number of persons over total frequencies
400
DATA SET 3, 3, 3, 4, 6, 7, 7, 7, 9
WHAT IS THE MODE, RANGE, MEDIAN
MODE : 7
RANGE: 6
MEDIAN: 6
500
Probability of getting Tails when flipping a coin AND rolling a 5
1/2 X 1/6 = 1/12
500
What is the percent of people having two or more bathrooms? 
21+5+7+3= 36
36/66
500
USING THE DATA SET : 2, 4, 3, 2, 1, 4
Mean
Median
Mode
Range
Mean : 8
Median : 3
Mode: 2
Range : 3