Probability
What is the chance of rolling a 6 on a 6-sided die?
1/6 OR 16.7%
What is the mode of 3, 5, 5, 6, 7?
5
Which set has the smallest range?
A: 10, 12, 15, 19
B: 1, 20, 25, 30
A = 9
If you flip a coin and roll a dice, how many total outcomes are there?
12
What does "mean" refer to in a data set?
The average OR add all numbers and divide by how many there are
What is the probability of pulling a blue marble from a jar with 6 red, 8 blue, and 5 green marbles?
8/19
What is the median of: 2, 4, 6, 8, 10, 12?
7
What’s the outlier: 7, 9, 8, 110, 10, 12?
110
Tree diagram: what is P(Tails and rolling a 2)?
1/12 OR 1/2 x 1/6
What does the "range" refer to in a data set?
The difference between the highest and lowest numbers
A die is rolled twice. What is the probability of both rolls being 3?
1/36 OR 1/6 x 1/6
Find the mean of: 72, 80, 83, 88, 78
80.2 OR 80
Which data set has largest range: A: 312–554 or B: 232–391?
A: 242
Roll 2 dice. What’s the chance of getting a sum of 7?
6/36 OR 1/6
1 and 6
2 and 5
3 and 4
4 and 3
5 and 2
6 and 1
You order the numbers from least to greatest, and then average the two middle numbers.
What’s the probability of flipping Heads and rolling a 3 on a 4-sided die?
1/8 OR 1/2 x 1/4
Find the range of: 14, 22, 24, 24, 29
15
Arrange from least to greatest: 48, 82, 51, 15, 72, 78 → Then find median
61.5
A bag has 3 red balls and 5 blue balls. You draw one ball, put it back, and then draw again. What is the probability of getting red both times?
9/64 OR 3/8 x 3/8
What does it mean if a data set has no mode? Give an example
When all numbers in the data set only occur one time OR 1, 2, 3, 4, 5
A basket has 5 yellow, 2 red, and 4 blue slips. What’s the chance of getting red?
2/11
Find the mean, median, and mode of: 36, 46, 34, 32, 32, 33
Median: 33.5
Mode: 32
Test scores: 72, 82, 92, 82, 72, 102, 92, 82. What’s the mean?
85.75 OR 86
Spinner with 3 colors: what’s P(blue 2 times in a row)?
1/9 OR 1/3 x 1/3
What is the difference between theoretical probability and experimental probability?
Theoretical is based on expected outcomes, while experimental is based on actual outcomes.