Measurement of Central Tendency
How do you find the range of a set of numbers?
Subtract the smallest number from the largest
2/3 x 1/5
1/15
Evaluate this expression if a=4
45-a=
41
73 + (-22) =
51
Find the mean of this data set: 88, 49, 32 (You can use a calculator)
56.33
3/4 x 5/6
18/24 or 3/4
Evaluate the expression if a=5
4(a)
20
-456 + (-122) =
-578
What is the mode for this data set?
78, 98, 28, 48, 78, 48, 98, 78
78
2/3 divided by 4/5
10/12 or 5/6
Evaluate the expression if a=10 and b=20
4(a) + b=
60
-3445 + 444
-3001
What do you do if you are trying to find the median and there are two numbers in the middle?
Take the mean (or average) of the two numbers.
1/4 divided by 1/2
2/4 or 1/2
Evaluate the expression if a=25 and b=20
5(b) + 2(a)=
150
843 - (-234) =
1,077
What is the median of this data set?
6, 4, 22, 12
9
2/5 + 3/10
7/10
Evaluate this expression if a=2 and b=3
a to the power of 3 plus b to the power of 5
251
-345 - (-567)=
222