Data
Give an example of numerical data.
Determine the median of the data.
1,6,7,6,2,9,3
6
What does "IQR" stand for?
Interquartile Range
Determine the quotient WITHOUT a calculator:
45052/28
1609
How many siblings does Miss D have?
3 (1 younger, 2 older)
Give an example of categorical data
Anything that is NOT numbers (colors, size, days, etc.)
The following are scores from a video game that was played 10 times.
130, 150, 120, 170, 130, 120, 160, 160, 190, 140
What is the median score?
145
Find Q1 and Q3 of the following data:
4, 6, 8, 10, 12, 14
Q1 = 6
Q3 = 12
Determine the value of the expression WITHOUT a calculator:
3.72-1.38
2.34
This number is both a prime number and the number of snacks a middle schooler claims they need to survive one class period.
67
Which is an example of a statistical question?
1. How old are you?
2. How old are the students in our school?
3. How old is your teacher?
4. What is the difference between your age and your teacher's age?
2. How old are the students in our school?
For 12 days, Mai recorded how long her bus rides to school are. Here are the times she recorded.
9, 12, 6, 9, 10, 7, 6, 12, 9, 8, 10, 10
Determine the mean for Mai’s data.
9
Find the IQR:
2, 4, 6, 8, 10, 12, 14, 16
IQR = 8
(Q1=5, Q3=13, 13-5=8)
What does "MAD" stand for?
Mean Absolute Deviation
PINK!
What is the difference between median and mean?
Median is the middle number; mean is the average of all the numbers. Answers may vary.
In a round of mini golf, Angel records the number of putts on each hole.
2, 3, 1, 4, 5, 2, 3, 4, 3
What is the mean number of putts per hole?
3 putts per hole
What Q (quarter) is also the median?
Q2
What is the difference between the mean and the median?
What is Miss D's favorite class?
Photography
Which numbers are in the middle half of the data?
1, 2, 2, 3, 3, 4, 4, 6, 8, 10, 11, 12
3, 3, 4, 4, 6, 8
3 classes worked together to raise money for their classroom libraries. They agreed to share the money equally.
The first class raised $25.50, the second class raised $49.75, and the third class raised $37.25.
What is each class’s equal share?
$37.50
What is the IQR of the data?
min: 3, Q1: 5, Q2: 7, Q3: 10, max: 14
5
(Q3-Q1, 10-5=5)
What is the analogy that Ms.Kotek uses for the IQR?
Hershey bar - split into 4 pieces
How old is Miss D?
17