Percents, Decimals, and Fractions
This fraction represents 50%.
What is 1/2?
The probability of rolling a number less than 7 on a standard six-sided die.
What is certain?
Rolling a die once and predicting you will roll a 5 is an example of this type of probability.
What is theoretical probability?
Flipping a coin and rolling a die at the same time is an example of this type of event.
What is a compound event?
All the students in your school represent this.
What is the population?
The decimal form of 3/4.
What is 0.75?
The chance of flipping a coin and landing on tails.
What is just as likely as unlikely?
If you flip a coin 10 times and it lands on heads 7 times, this is an example of this type of probability.
What is experimental probability?
The total number of outcomes when flipping two coins.
What is 4? (HH, HT, TH, TT)
A group of 30 students chosen from your school to answer a survey is an example of this.
What is a sample?
Convert 0.2 to a percent.
What is 20%?
The likelihood of picking a red card from a standard deck if all red cards are removed.
What is impossible?
The theoretical probability of picking a blue marble from a bag with 4 blue and 6 red marbles.
What is 4/10, or 2/5?
If you roll a die and flip a coin, what is the probability of getting a number greater than 4 and tails?
What is 2/12, or 1/6?
A sample must be this to fairly represent the population.
What is random?
Write 125% as a mixed number.
What is 1 1/4?
A spinner has 4 sections: 1 red, 1 blue, 1 yellow, and 1 green. What is the probability of landing on red?
What is likely?
If you flip a coin 50 times and it lands on tails 22 times, what is the experimental probability of tails?
What is 22/50, or 44%?
The total number of outcomes when rolling two dice.
What is 36?
If a survey only asks people from one classroom, the results could have this problem.
What is bias?
A bag has 4 green marbles and 6 red marbles. What percent of the marbles are green?
What is 40%?
If you roll a die numbered 1–6, what is the probability of rolling an odd number?
What is 3 out of 6, or 1/2?
Will accept What is just as likely as unlikely?
Explain the difference between experimental and theoretical probability.
What is theoretical probability is what should happen, while experimental probability is what actually happens when tested?
The probability of rolling two dice and getting a sum of 7.
What is 6/36, or 1/6?
Why is it better to survey a random sample rather than the entire population?
What is it saves time and gives a good estimate?