Order of Operations
5 + 6 * 9
59
Name an example of a whole number
1, 2, 3, etc.
Identify independent/dependent variable:
Cost of phone bill, number of minutes on the phone call
Independent - number of minutes
What does positive correlation look like?
Data points go up when you look at the graph from left to right.
85, 87, 81, 92, 87, 80, 83
Find the mode
87
40 - 2 * 3^2
22
Name an example of an integer
-2, -1, 0, 1, 2...
Identify independent/dependent variable:
Pressure, depth under water
Dependent: pressure
Independent: depth under water
What does negative correlation look like?
Data points go down when you look at the graph from left to right.
85, 87, 81, 92, 87, 80, 83
Find the median
85
8 + 12 / 6 - 3
7
Name the set(s) this number belongs to:
-1
integers, rational numbers
Identify independent/dependent variable:
Tom has $8. He wants to buy oranges which cost $.75 a piece.
Independent - money spent
Dependent - number of oranges bought
What does no correlation look like?
Data points appear random, no trend up or down.
85, 87, 81, 92, 87, 80, 83
Find the mean
85
5 * 3^2 - 13
32
Name the set(s) this number belongs to:
sqrt(5)
irrational numbers
Identify independent/dependent variable:
Anna earns $6.50 per hour at her job. She can work up to 18 hours per week.
Independent - hours worked
Dependent - money earned
Time spent studying, and test scores
positive
2.4, 2.3, 2.1, 2.5, 2.3, 2.2
Find the median and mode
median = 2.3
mode = 2.3
21 + 49 / 7 + 1
29
-32 / 95
rational numbers
Write the rule
1 6
2 9
3 12
4 15
y = 3x + 3
What kind of correlation?
The price of eggs, the number of video games sold
2.4, 2.3, 2.1, 2.5, 2.3, 2.2
Find the mean
2.3