Chapter 2
What is Mode?
Most Occuring Number in A data set,
What is standard deviation and how is it calculated?
It is the average score from the mean, and it is calculated by finding the square root of the variance.
What is Probability?
The chance that something happens.
What is a universal set?
A set with all possible elements.
A Permutation
A Number of outcomes where order DOES matter.
What is the Midrange of a data set with 18, 21, 16, 20, and 25?
16+25=41/2=20.5
20.5.
What is Variance?
The statistical spread between numbers of a data set.
What is expectation?
The series of outcomes in random events.
Mr. Johnson has 8 students with dogs, 4 students with cats, 2 students with both, and 8 with neither, how many students are in his class?
22 students.
4!=?
4!=24
Range of Data Set/Number of Classes
What are quartiles and what graph is used to represent them?
Data split up into quarters; depicted in box and whisker plot.
What is the probability you win a raffle where 55 total tickets were put in? You bought 2 tickets.
2/55
What is the probability of flipping a coin, then rolling a dice, and the coin lands on heads, while you roll a 1?
1/12
How many ways can people get 6th, 5th, 4th. 3rd, 2nd, and 1st place in a race?
6*5*4*3*2*1= 720
What Would the boundary of a data set be if its limits were 60-70?
59.5-70.5
What is IQR with data values of 115, 186, 187, 192, 213, 214, 217, 228, 234, 238, 238, 246, 264?
46
1000 people enter a raffle, the payout is $350, with the ticket costing $1. What is the expected amount of money you will receive from this event?
-$.65
You are making a sandwich. You can use either white or rye bread, with ham or salami, and with a condiment of mustard, mayo, or ketchup. How many different outcomes are there?
12 outcomes.
The amount of ways you can choose 3 pizza toppings from a group of 10 (without repetition) Is...
10C3=120
What is Cumulative Frequency for a set with frequencies of 8, 12, 25, 7, 2, and 5?
59.
How is an Outlier Determined?
Q1 - IQR*1.5
You enter into a raffle among 1,000 other people. The ticket cost is $3. There are 5 different prizes of $100, 1 prize of $500, and and 1 prize of $1,000. What is expected payout of this event?
-$.83
What is the probability you draw 2 face cards in a row?
6.25%
11!