Statistics and Algebraic Concepts
Graphing
Fractions
Ratios/GCF/LCM
Decimals and Percents
100
What is the median of this data set:
8, 4, 6, 4, 4, 9, 2
Put the data in order from least to greatest:
2, 4, 4, 4, 6, 8, 9
Find the middle number:
4
100
Plot these numbers on a number line:
-4 and the opposite of -4
100
Jason walks 1/4 a mile to school. John walks 2/4 miles to school. Ron lives between Jason and John, what are two possible distances that he would have to walk to school?
1/4 = 10/40
2/4 = 20/40
Examples of fractions in between:
11/40, 12/40... Or anything equivalent
100
Wanda has a collection of cars. The ratios is 5 red cars to 8 blue cars.
Write this using ration notation.
5:8
100
19.85 + 24.072 =
43.922
200
What is the mean of this data set?
5, 6, 3, 2, 2, 9, 3
Add all the numbers up:
5+6+3+2+2+9+3 = 30
Divide by the number of data points:
30/7 = 4.3
200
Plot these numbers on a number line:
-3/4 and 2 1/3
200
1/8 * 2/3 =
2/24
200
Wanda has a ratio of 5 red cars: 8 blue cars. If she has a total of 78 cars, how many are red and how many are blue?
5 + 8 = 13
13 * ? = 78
6
So, 5* 6: 8*6 =
30:48
200
73.2 * 9.4 =
688.08
300
A person on a game show has the following scores:
85, 94, 92, 56, ____
They have played four out of five rounds. In order to move on to the next round their scores need to have an average of 85. What is the lowest score they can get on the next round to advance?
85 * 5 = 425
The sum of all five rounds needs to add up to 425. Subtract the other rounds from that number.
425 - 327 = 98
300
Describe this distribution of this data:
Examples:
The data is skewed to the left.
Most of the data is (7,9)
The average falls at about (9,11)...
300
1 1/2 * 4/5 =
3/2 * 4/5 = 12/10
300
A bunch of grapes cost 2 pounds for $8. How much would 7 pounds cost?
Find per 1 pound:
1 pound: $4
7 pounds would cost $28
300
3.8 / 0.4 =
9.5
400
Evaluate.
|-14|
14
400
3 1/2 / 1 2/3 =
7/2 / 5/3 =
7/2 * 3/5 = 21/10
400
LCM (4, 10)
4: 4, 8, 12, 16, 20
10: 10, 20
The LCM is 20
400
What is 20% of 180?
36
500
Evaluate.
2* (3+4) * 9 =
126
500
Mark has 15 cups of sugar. One batch of cookies requires 2 1/2 cups of sugar. How many batches of cookies can he make?
15 / 2 1/2 =
15 / 5/2 =
15 * 2/5 = 30/5
= 6 batches
500
GCF (24, 36)
Set up a factor tree and factor down to prime numbers:
GCF is 12
500
8 is ____% of 32
25%