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Statistics & Probability Basics

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Simple Probability
Compound Events
Data Displays
Center and Spread
Theoretical vs Experimental
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Practice middle school statistics and probability: simple and compound events, data displays, and measures of center and spread. Built for Grades 7-9. 25 ready-to-play clues, no prep needed. This is a Grades 7–9 Math review game in a Jeopardy-style format: a teacher puts the board on one screen, teams pick clues by point value, and the class answers out loud — no student devices or accounts needed. Categories: Simple Probability, Compound Events, Data Displays, Center and Spread, Theoretical vs Experimental.

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A peek at what's on the board — 5 categories and one sample clue from each. Answers stay hidden until you open them, so the game still works.

  • Simple Probability

    An event that is certain has what probability?

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    1

    +4 more clues in this category

  • Compound Events

    When flipping two fair coins, what is the probability of getting HH?

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    1/4

    +4 more clues in this category

  • Data Displays

    Which display uses bars to compare categories?

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    bar graph

    +4 more clues in this category

  • Center and Spread

    For data 2, 3, 3, 5, what is the mode?

    Show answer

    3

    +4 more clues in this category

  • Theoretical vs Experimental

    What do we call probability based on known equally likely outcomes?

    Show answer

    theoretical probability

    +4 more clues in this category

Board content

Simple Probability

$100 — An event that is certain has what probability?
1
$200 — What is the probability of rolling an even number on a fair six-sided die?
1/2
$300 — What do we call the set of all possible outcomes of an experiment?
sample space
$400 — If P(A)=0.4, what is P(not A)?
0.6
$500 — A bag has 3 red and 1 blue marble. What is P(red)?
3/4

Compound Events

$100 — When flipping two fair coins, what is the probability of getting HH?
1/4
$200 — With one die, what is P(rolling a 1 or a 2)?
1/3
$300 — For independent events A and B with P(A)=1/2 and P(B)=1/3, what is P(A and B)?
1/6
$400 — What is the probability of rolling a 2 and then a 3 on two fair dice?
1/36
$500 — A bag has 2 red and 2 blue marbles. Without replacement, what is P(two reds)?
1/6

Data Displays

$100 — Which display uses bars to compare categories?
bar graph
$200 — Which display shows each data point as a dot above a number line?
dot plot
$300 — Which display groups numerical data into bins to show frequency?
histogram
$400 — Which display shows median and quartiles with a box and whiskers?
box plot
$500 — In a box plot, what does the line inside the box represent?
median

Center and Spread

$100 — For data 2, 3, 3, 5, what is the mode?
3
$200 — For data 4, 7, 9, 10, what is the range?
6
$300 — For data 1, 3, 5, what is the median?
3
$400 — What is the mean of 2, 6, 8, 10?
6.5
$500 — For data 1, 2, 3, 4, 5, what is the IQR?
2

Theoretical vs Experimental

$100 — What do we call probability based on known equally likely outcomes?
theoretical probability
$200 — What do we call probability based on data from repeated trials?
experimental probability
$300 — What do we call a process that imitates a chance situation?
simulation
$400 — After many fair coin flips, what should the experimental P(heads) approach?
1/2
$500 — If theoretical P(A)=0.3, about how many times would A occur in 200 trials?
60

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