Mean, Median, Mode and Range
Proportional Relationships
Add/Subtract (-)Numbers
100
What is the mean?
Average
100
What is a ratio?
A comparison of two numbers.
Ex. 3ft to 1in
100
(-30)-(-82)
52
200
Find the range of this data set
4,7,9,10,2,3,4
8
200
What makes a line on a graph proportional?
Passes through (0,0) and is in a straight line.
200
9+-12
-3
300
Find the mean and median of this data set
4,1,7
Mean: 4
Median: 4
300
This equation shows the proportional relationship between the time (in hours) spent sailing, x, and the distance (in miles) that the Parker family traveled from shore, y. y=6x
What is the constant of proportionality?
k=6
300
11-(-23)
34
400
What is the mean, median, mode and range of this data set?
2, 3, 1, 4, 2, 3, 2, 5, 4, 2
Mean: 2.4
Median: 2
Mode: 2
Range: 4
400
k=3
400
(-662)-491
-1153
500
What is the median of this data set?
84, 99, 99, 121, 124, 124
110
500
What formula can you write once you find K?
k=14
y=14x
500
2+(-7)
-5