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Probability - 7th Grade
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Terms in this set (19)
Probability is...
The chance that something will happen!
Theoretical Probability is...
what "should" happen
Experimental Probability is...
what "actually" happens
Number of "outcomes" from rolling one die
6
Number of "outcomes" from rolling 2 dice
36
"And" usually means...
to multiply the probabilities
"Or" usually means...
to add the probabitlities
A "tree diagram" is...
an organized way to show all possible outcomes and combinations of multiple events
Equation for probability of rolling a 5, 3 times in a row
P(5, 5, 5) = 1/6 x 1/6 x 1/6
Equation for probability of rolling a 5, 2 times in a row
P(5, 5) = 1/6 x 1/6
What is the chance the you randomly pick a 6th grade math teacher and it is a MALE? (a word, not a number)
certain
What is the chance you will wake up tomorrow and it will be Christmas? (a word, not a number)
impossible
1/4
Landing on a green on the spinner
1/8
Landing on a blue on the spinner
0%
Landing on a brown on the spinner
100%
Landing on any color on the spinner
Numbers 1-10 are placed in a bag, what is the following probability if you randomly draw a number out of the bag:
P(even #) =
50%, equally likely
Probability of picking a letter from the word MATH and it being a consonant?
3/4 or 75%
Probability of picking a letter from the word MATH and it being a vowel?
1/4 or 25%
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