Theoretical
The classic wood carousel at Carousel Park in Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?
2/3, or 0.67, or 67%
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"? A = 16 E = 11 I = 29 O = 19 U = 25
11/100 or 0.11, or 11%
The scores on a quiz were: 7, 9, 10, 6, 8, and 10. What is the mean score (rounded to hundredths place)?
Define "theoretical probability."
It is the probability of what should occur.
Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8 or 0.125, or 12.5%
A six-sided die is thrown 50 times. Using the list below, how does the theoretical probability of rolling a 3 compare to the experimental probability of rolling a 3?
Number on Die : How Many Times it Landed on That Number
1 : 8, 2 : 6, 3 : 7, 4 : 12, 5 : 10, 6 : 7
The theoretical probability is higher than the experimental probability. (Theoretical = 17%, Experimental = 14%)
The following numbers were collected from a survey:
12, 15, 11, 18, 14
What is the median of this data set?
14
How likely is it that a die is tossed and lands on 3?
Unlikely
What is the probability of rolling two odd numbers in a row with a standard die?
1/4, or 0.25, or 25%
Nya recorded the types of birds that visit her bird feeder. Based on the results below, what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5, or 0.20, or 20%
The following data shows the number of books read by students:
5, 3, 9, 3, 4, 7, 3, 6
What is the mode of this data set?
3
How likely is it that a die is tossed and it lands on 8?
Impossible
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?
1/5, or 0.20, or 20%
A bag contains red, blue, and green marbles. Ella draws a marble from the bag, records the color, and puts it back. She does this 40 times. The results are:
Red: 10 times
Blue: 18 times
Green: 12 times
What is the experimental probability of drawing a blue marble?
45%
Temperatures recorded over a week were:
22, 19, 31, 25, 18
What is the range of the temperatures?
13
Define "compound probability."
The likelihood of two or more events happening together
How likely is it that a die is tossed and lands on any number 1-6?
Certain
Antonia spins a spinner with 5 equal sections numbered 1-5 and she spins another spinner with 5 equal sections with the letters A-E. What is the probability she will spin a 4 and a vowel?
2/25 or 0.08, or 8%
A student rolls a six-sided die 60 times and records the outcomes. The number 4 appears 15 times. What is the experimental probability of rolling a 4?
25%
The ages of students in a group are:
13, 15, 14, 14, 16, 15, 14
Questions:
a) What is the mean age?
b) What is the median age?
c) What is the mode?
d) What is the range?
a) 14.43
b) 14
c) 14
d) 3
What are the two types of compound events?
Independent and dependent
How likely is it that a die lands on an odd number and a spade is pulled from a deck of cards?
unlikely