Statistics
Out of a group of 30 volunteers, 14 people are chosen to participate in a survey about the number of phone calls they make each week. What is the sample in this situation?
14 people selected to participate
A standard number cube is rolled. What is the chance a 3 is rolled?
1/6
A circle with radius of 2 has what circumference?
12.56
45 is what percent of 180?
25%
What is the ratio of (x, y) for the constant of proportionality?
y/x
During a recreational field hockey game, every spectator placed his or her ticket stub into one of several containers. After the game, the coach chose 14 people to march in the sportsmanship parade. What is the population of this situation?
The people who attended the field hockey game.
A spinner with numbers 1 - 8 are visible. What is the probability I spin a number greater than 3?
5/8
A circle with diameter of 10 has what circumference?
31.4
Tori has baked 48 out of 160 cupcakes for a wedding. What is her percent complete?
30%
Which equation is proportional?
A) y = 2x - 5
B) y = 2.5x
C) y = 3/x
D) y = 2(x - 3)
B) y = 2.5x
Micha wants to get a vending machine for the AP room with soda instead of water. He surveys a random sample of students from Mr. Carpio's Spanish class. Is this is a good sample?
No, it doesn't include all the students in the school.
A coin is flipped 50 times. How many times could I expect to get heads?
25
A circle with radius of 3 has what area?
28.26
Marina bought some fabric for $25 to make some stylish handbags. She wants to sell the bags for 30% more than she paid for them. How much should she sell the bags for?
$32.50
What are the two conditions to make a graph proportional?
Straight line through the origin.
14 out of 24 students in a survey said they love cookie dough ice cream. Using the survey if there are 480 students in the building. How many can we predict would also like cookie dough ice cream?
280 students we predict would like cookie dough ice cream.
An experiment results were 4 green cubes, 5 red cubes and 1 black cube. What is the chance of pulling a green cube based on the experiment?
4/10 or 2/5
A circle with diameter of 9 inches has what area?
63.585 square inches
Culver's gives a 15% discount for military and first responders. If a paramedic came to eat at Culver's and his bill was $28.64. How much would the paramedic have to pay after discount?
$24.34
A table has values that follow:
(2, 7) , ( 4, 11) , and (6, 16)
Is the table proportional?
No, the unit rates are not the same.
7/2 = 3.5
11/4 = 2.75
16/6 = 2.66
A survey said 56 out of 72 teachers enjoy reading. If there are 63 teachers that enjoy reading, how many teachers are in the building?
81 teachers
An experiment results were 4 green cubes, 5 red cubes and 1 black cube. If I continued the experiment and drew a cube 100 times, how many times should I draw a red cube?
50
A cylinder has been cut vertically what shape is the piece that is cut?
A rectangle
Simple interest is found I = Prt
Becky borrows $450 from her bank at a 3% interest rate for 1.5 years. What interest will Becky pay?
$20.25
What is the constant of proportionality of the equation y = -4x ?
k = - 4