Intro to Stats
Given the data set, find the mode:
1,3,3,3,4,5,8,10,11,11
3
It has the MOST number of 3's
What other word means the same as "mean"?
Average
The smaller the MAD, the (more/less) consistent the data is.
More
List the 5 number summary.
Min, Q1, Med, Q2, Max
Rosemary is the costume designer for a large leather company. She has 10 different hats, including 2 sailor's caps.
What is the probability that a randomly chosen hat from her inventory will be a sailor's hat? Write as a fraction, decimal, OR percent.
2/10 or 1/5 or 0.20 or 20%
P(event)=favorable/possible outcomes
Find the median:
1,2,4,8,12,15
6
You add the 4 and 8, and divide by 2
Find the mean. Round to 1 decimal place!
1,3,6,9
4.8
Use desmos calculator
Find the MAD:
1,3,6,9
2.8
Look at diagram to answer question.
8
That is the maximum.
16 students have cell phones. Five of the cell phones have touch screens. Out of 144 students' cell phones, how many would you expect to have touch screens?
Hint: set up a proportion!
45
Find the range:
14,18,22,28,30,33,47,48
34
You subtract the lowest from the highest, 48-14
Find the mean. Round to 1 decimal place.
15,15,17,19,21,21
18
Find the MAD:
15,15,17,19,21,21
2.3
Look at the diagram to answer.
70
That is Q1.
Sara wants to pick out an outfit for the school dance. She can choose from 3 pairs of pants, 5 shirts, and 2 pairs of shoes. How many different outfits does she have to choose from?
30
Find the mode:
12,12,12,15,16,18,21,21,21,24,26,31
12 AND 21
Both numbers were written 3 times
Find the mean. Round to 1 decimal place.
14,18,22,28,30,33,47,48
30
Find the MAD. Round to one decimal place.
14,18,22,28,30,33,47,48
9.5
See diagram to answer question.
Choco chili
You flip a coin and roll la 6-sided die at the same time.
What is the probability of flipping heads and rolling a four?
1/12
You multiply 1/2(options for coin) by 1/6(options for dice)