Name________________________
THEORETICAL
PROBABILITY #1
Directions: Theoretical probability describes how likely it is that an event will happen. Use the probability chart below to decide whether each event below is impossible, unlikely, equally likely, likely, or certain to happen.
0 ¼ ½ ¾ 1
|_______________|_______________|_______________|_______________|
Impossible unlikely equally likely certain
likely
Example: A two sided coin is flipped and lands on tails. ½ --Equally likely
EVENT
PROBABILITY
1) A two-sided coin is flipped and lands on heads. __________________
2) Roll a die and get a number greater than six. __________________
3) Spin a spinner numbered 1-8, and you land on a number less than 3. __________________
4) You will watch at least 1 hour of TV today. __________________
5) Pick a blue marble from an equal number of blue, yellow, red, and green marbles. __________________
6) You will have fish for dinner tonight. __________________
7) Pick an ace from a regular deck of cards. __________________
8) Pick a red card from a regular deck of cards. __________________
9) Your class will go on a field trip this year. __________________
10) Roll a die and get an even number. __________________
11) Roll a die and get a number that is a factor of 30 __________________
12) It will snow in your town tonight. __________________
13) Your birthday will fall on a Friday this year. __________________
14) Pick a purple marble out of a bag of red marbles. __________________
15) Picking a vowel from the letters in your school’s name. __________________