Book Definitions
the average of all the data set
mean
y=mx+b
slope of a line
Donna will toss a coin and record the toss as heads (H) or tails (T). Then, she will randomly pick a card from a box that has four cards numbered 1, 2, 3, and 4, and record the number chosen.
Use the format H1 to indicate that the coin toss is heads and the number chosen is 1.
Describe the sample space of Donna's experience.
{H1, H2, H3, H4, T1, T2, T3, T4}
15-8+5-(-7)
19
What happens when you have 2 or more consecutive absences?
the middle value in a set of numbers
median
Formula to calculate the probability of two independent events A and B occurring together
P(A∩B) = P(A) × P(B)
To fill in the blanks in the following probability distribution table, what could be a possible solution?
Value x of X P( X = x )
-10 ____
2 ____
5 0.33
8 0.07
12 0.11
0.24 and 0.25, or
0.09 and 0.40, or
0.31 and 0.18
5 - (-3) + 8 - 15 + 2
3
What do you have to do if you are sick or have an emergency and you cannot attend the PLTL session?
Email the professor with an excuse and CC your PLTL leader
the value that is repeated the most
mode
P (A or B) = P(A) + P(B) - P(A and B)
A bag 10 with marbles. (The 10 marbles are yellow.) A marble is chosen from the bagat random. What is the probability that it is yellow? Write your answer as a fraction or a whole number.
1
15 + 8 + 4 - (-15) - 12 - (-4)
34
What happens if you're constantly on your phone or not doing the work?
You might be marked as absent :(
can assume an infinite number of values between any two specific values. They are obtained by measuring. They often include fractions and decimals.
continuous variable
What is the formula to find the Expected Value of a Function? (Expectation)
E ( X ) = μ = ∑ x P ( x )
A coin is tossed three times. Find the probability of getting a tail on the first toss, the second toss, or both.
3/4
3x2 + 6x - 3
when x = 3
42
After how many minutes will you be considered absent if you're not in class?
After 10 - 15 minutes!
used to display the distribution of a dataset
box and whisker plot
What formula will you use for the following problem?
Of the people who fished at Clearwater Park today, 42 had a fishing license, and 28 did not. Of people who fished at Mountain View Park today, 42 had a license, and 18 did not. No one fished at both parks.
Suppose that one fisher is chosen from each park at random, what is the probability that the fisher chosen from Clearwater had a license and the fisher chosen from Mountain View did not have a license?
P(A∩B) = P(A) × P(B)
Anita's, a fast-food chain specializing in hot dogs and garlic fries, keeps track of the proportion of its customers who decide to eat in the restaurant (as opposed to ordering the food "to go") so it can make decisions regarding the possible construction of in-store play areas, the attendance of its mascot Sammy at the franchise locations, and so on. Anita's reports that of its customers order their food to go. Suppose that this proportion is correct and that a random sampleof individual customers is taken.
Answer the following.
(a) Estimate the number of customers in the sample who order their food to go by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
(b) Quantify the uncertainty of your estimate by giving the standard deviation of the distribution. Round your response to at least three decimal places.
a.) 20.8
b.) 3.160
At the beginning of the month, your account balance was $94. During the month, you deposited $562 and wrote a check for $474. What was your balance at the end of the month?
182
What's your PLTL name?
Mildred Infante :D