Definitions
Define Mode. How do you calculate it?
The Most common number. Eye Test.
What are the 3 Measures of Center?
Mean, Median & Mode
What is/are the Measure(s) of Variation?
IQR, Range & Outlier
What do we call the formula used to calculate the total number of outcomes in a set of compound events?
Fundamental Counting Principle
FCP
Simplify:
-2(5x-4)
-10x+8
Define Range. How do you calculate it?
Width of your data. Largest - Smallest.
( 3, 5, 9, 2, 11, 7, 8, 1, 4, 3, 8)
What is the Median?
Median = 5
What is the range of: 3, 2, 34, 5, 12, 14?
Range = 32
For breakfast you can order a bagel or a yogurt, then you can ask for an orange juice, apple juice, or a water. How many different breakfasts can you have?
6 breakfasts
Evaluate the expression when c = 4:
4c-8
8
Define Mean. How do you calculate it?
An Average of all your data. A measure of center. Add up all your data and divide by the amount of numbers.
( 8, 14, 5, 16, 16, 4, 3, 9, 7, 1, 0, 11, 6, 12, 4, 9)
What is the Mode?
Mode = 4, 9, & 16
Is there an outlier in the following set of data? Explain using appropriate vocabulary.
(32, 35, 28, 46, 21, 31, 34, 48, 27, 2, 24, 29)
Charlie has three shirts, two pairs of pants, and four pairs of sneakers. Determine the total number of outfits Charlie can make.
24 outfits
Linda is baking a batch of brownies. The recipe calls for 2.5 cups of sugar for the batch of two dozen. How much sugar is in each brownie? (Hint: this is a unit rate!)
5/48 cups per brownie
Define Sample Space
The set of all possible outcomes of a situation.
( 7, 12, 4, 15, 2, 13, 10, 6, 11, 1)
What is the Median?
Median = 8.5
Given the Following quartile data, what is the IQR?
Q0 = 4, Q1 = 7, Q2 = 13, Q3 = 19, Q4 = 22
IQR = Q3 - Q1 = 19 - 7 = 12
John is buying a bracelet for his girlfriend. He has to choose between silver and gold, and pink charms, purple charms, or red charms. What is the probability he chooses a gold bracelet with red charms?
P(GR)=1/6
Charis invested $140. She earned a simple interest of 3% per year on the initial investment. If no money was added or removed from the investment, what was the amount of interest Charis received at the end of two years?
He earned $8.40 in interest
Define IQR. How do you calculate it?
Middle 50%. Q3 - Q1.
(1.4, 2.8, 2.9, 3.4, 4.2, 6.8, 7.1, 7.1, 8.9)
What is the Mean?
Mean = 44.6 / 9 = 4.955555555
Given the Following data set, what is the Range?
( 1, 0, 13, 1, 2, 3, 5, 15, 5, 7, 11, 9, 11, 12, 14, 5)
High - Low = Range
15 - 0 = 15
Mrs. King is crocheting a new sweater! She can choose between blue or green for the body, white or black for the sleeves, and the pattern can be either patches or blended. What is the probability she makes a patch sweater with black sleaves?
P(PB)=2/8=1/4
Simplify and combine like terms:
15a-7c+24b-5a+3(2b-c)
10a+30b-10c