Probability
I flip a coin 10 times and it comes up heads 4 times. What is the experimental probability of getting tails when I flip. What is the theoretical probability of getting tails when I flip
6/10 or 3/5
5/10
What is the Fundamental Counting Principle? I have 5 shirts, 3 pairs of pants, and 4 pairs of shoes. How many different outfits can a create?
If one event can occur m ways and another event can occur n ways, there are m x n ways that both events can occur together.
5 x 3 x 4 = 60
List at least three measures of central tendency
mean, median, mode, average,
give examples of each of the following types of numbers: integer, rational number, irrational number, prime number
-4, 1/2, pi, 7
XY - J = B Solve for Y
Y=(B + J)/X
Describe two events that are independent
the two events have no impact on each other
How does a permutation differ from a combination?
order matters in a permutation, order does not matter in a combination.
Find the mean, median, and mode of the following data:
10, 10, 12, 13, 13, 13, 15, 16, 18, 30, 32
16.55, 13, 13
Factor the following number completely: 702
2 x 3 x 9 x 13
Find the equation of line that passes through the points (-1, -3) and (2, 6)
y = 3x
I flip a coin 5 times. I get 4 heads in a row- what is the probability that I get heads on the 5th roll?
1/2
what does 7! represent?
7 x 6 x 5 x 4 x 3 x 2 x 1
Define the interquartile range (IQR)
Find the IQR for the following data:
1,2,3,4,5,7,7,8,10,12
Q3 - Q1
8 - 3 = 5
evalutate:
x3 x5
(x3)5
x8
x15
the slope of a vertical line is:
the slope of a horizontal line is:
iundefined
0
Define two dependent events
I have to choose 3 books out of 8 to put on a shelf. the order of the books DOES matter. how many ways can I do that.
8 x 7 x 6
define the range of a set of data
high - low
sqrt(8)*sqrt(2)
4
Solve the proportion 7 is to 18 as x is to 27
x = 10.5
I have a bag of marbles with 5 green, 7 red, and 4 blue. I take one marble out- it is green- and I do not replace it. what is the probability of pulling a green marble and then a red marble on the second draw?
5/16 x 7/15 = 7/48
I have to choose 3 out of 8 books to arrange on a shelf. the order of the books do not matter. How many different ways can I choose the books?
56
Is the following sequence arithmetic, or geometric
3, 6, 12, 24, 48, ...
geometric
write the following using exponents:
sqrt(x^5)
x^(5/2)
solve
x^2-3x-25=3
x = 7 and -4