Probability and Odds
The probability of choosing a day of the week that starts with the letter T?
2/7 29%
What is the probability of choosing a KING or QUEEN from a standard decks of cards?
8/52 = 2/13 15%
When you add all of the data and then divide by how many numbers are in the set
Mean (Average)
The percent that each part of a box and whisker plot represents
25%
A word that means about 25%
Unlikely
The odds in favor of choosing a JACK from a standard deck of cards
4:48
What is the probability of rolling an even number or a prime number on a standard die?
5/6 83%
26 years old
You must write this with the fraction when finding probability
Percentage
5:2
In a bag there are 15 marbles. There are 4 green, 5 blue and 6 red marbles. What is the probability of choosing a green, holding it, then choosing a red?
24/210 = 4/35 11%
Q3 - Q1
Interquartile Range (IQR)
If 200 students were asked their favorite sport, how many of them said soccer if it made up 15% of a circle graph?
30 students
A graph that will show percentages adding up to 100%
A circle graph
4/11 36%
In a bag there are 15 marbles. There are 4 green, 5 blue and 6 red marbles. What is the probability of choosing a red, putting it back, then choosing another red?
36/225 = 4/25 16%
What is the mode?
4, 8, 2, 6, 4, 8, 2, 4, 1, 5, 7, 9, 10, 1
4
You want to end the class with an 80%. You have already scored 74%, 78%, 86% and 75% on the first four tests. What do you need to score on the fifth and final test to achieve your goal?
87%
A graph that shows change over time
A line graph
The probability of choosing a correct answer on a multiple choice test is 1/4. What are the odds against choosing the wrong answer?
1:3
In a bag there are 15 marbles. There are 4 green, 5 blue and 6 red marbles. What is the probability of choosing a blue, not replacing it, then choosing another blue?
20/210 = 2/21 9.5%
List the steps to finding the three quartiles.
1. Put the numbers in order from least to greatest
2. Find the median (Q2)
3. Find the median of the lower half of numbers (Q1)
4. Find the median of the upper half of numbers (Q3)
A survey was given to students asking their favorite color. Here are the results: Red (35), Orange (30), Yellow (10), Green (25), Blue (40), Purple (5).
If 20 more students are asked, how many are expected to say blue?
About 6 students (5.925)
Shows the relationship between two variables through points on a graph.
Scatter plot (correlation)