Vocabulary
_____________________ are ratios that have different numbers but represent the same relationship.
What is "equivalent ratios"?
What is a probability that a fair coin will land facing tails up when flipped?
What is "P(tails) = 1/2" ?
Ana runs 3/4 mile in 6 minutes, or 1/10 of an hour. Assuming she runs at a constant rate, what is her speed, in miles per hour?
What is "7.5 miles per hour"?
How do you know a graph is representing a proportional relationship?
What is" the graph of a proportional relationship is a straight line through the origin"?
A coin is flipped 100 times. The coin lands on heads 45 times. This is an example of theoretical or experimental probability?
What is "experimental probability?"
A ______________________ compares x units of one quantity to 1 unit of another quantity.
What is "unit rate"?
The yearbook club is handing out Tshirts to its members. There are 5 blue, 7 red, 9 green and 4 yellow tshirts. If Jacob is handed a t-shirt, what is the probability that the color is red?
What is "9/25"?
Four movie tickets cost $30.00. Five concert tickets costs $36.50. Do the movies or concert cost less per ticket? How much less?
What is "The concert tickets cost $0.20 less per ticket than the movies."?
How do you know if an equation represents a proportional relationship?
Monique is rolling a six-sided number cube labeled 1-6. What is the theoretical probability that she rolls an odd number?
What is "1/2"?
The ______________________________ is the constant multiple that relates two proportional quantities x and y.
What is "constant of proportionality"?
What is a simulation?
What is "a model of a real-world situation that can be used to find probabilities"?
A box of cereal states that there are 90 calories in 3/4 cup serving. How many calories are in 4 cups of cereal?
What is "480 calories"?
It costs $5.00 to send 6 packages. Consider the number of packages per dollar. What is the constant of proportionality?
What is "k = 1.2"?
A spinner has six equal sized sections numbered 1,1,2,2,3 and 4. What is the sample space for the spinner?
What is "{1, 1, 2, 2, 3, 4,}"?
When a fair coin is flipped, there are two possible _______________________.
What is "outcomes"?
A basket contains a red, a yellow and a green apple. A second basket contains an orange, a lemon and a peach. Use an organized list to show ALL outcomes in the sample space. How many possible outcomes are there?
What is "9 possible outcomes"?
Claire boarded an airplane in Richmond,VA and flew 414 miles directly to Charleston, SC. The total flight time was 3/4 hour. How fast did Claire's airplane fly, in miles per hour.
What is "552 miles per hour"?
The triathlon has a 2.4 mile swim. Becky can swim 1/2 mile is 20 minutes. If she continues at this pace, what is her estimated time for finishing this race?
What is "1.6 hours"?
Rachel plays a game by rolling two number cubes with sides numbered 1 through 6. To win the game, the sum of the numbers facing up must be 11. What is the probability that Rachel will win the game?
What is "P(sum of 11) = 2/36"?
Spinning the pointer of a spinner twice and landing on blue both times is a ___________________.
What is "compound event"?
The best player on a basketball team makes 75% of all free throws. The second best player on the team makes 70% of all free throws, and the third player makes 65% of all free throws. Based on their experimental probabilities, estimate the number of free throws they will make in the next 40 attempts.
What is "30, 28, 26"?
Jed is baking shortbread for a bake sale. The recipe calls for 1 1/4 cups of flour & 1/2 stick of butter. How many cups of flour will Jed need if he uses 3 sticks of butter?
What is "7.5 cups of flour"?
The number of trains arriving (y) at the train station at BWI during (x) hours can be presented by y=20x. Which statement best represents the same proportional relationship?
A. Every 24 hours, 460 trains arrive.
B. Every 30 minutes, 13 trains arrive.
C. Every 6 1/2 hours, 130 trains arrive.
What is "C"?
Explain the difference between experimental probability and theoretical probability.
What is "experimental probability is found by conducting trials, whereas theoretical probability is based on the desired possible outcomes"?