Percentages
Looking at a box and whisker plot; what fraction of the data is below the upper quartile?
3/4
Where can you find the median on a box and whisker plot?
The line in the middle of the box.
Find the mean of the following data: 20, 16, 11, 10, 16, 10, 8, 7
12.25
How do you find the range of a set of data?
Upper Extreme - Lower Extreme = Range
a + 3 = 8
x=5
5a = 25
a=5
Looking at a box and whisker plot; what percentage of the data is above the upper quartile?
25%
Find the upper quartile of the following data: 10, 12, 8, 13, 6, 10, 16
Q3: 13
Find the median of the set of data: 10, 5, 9, 8, 3, 2
6.5
Find the range of the data: 3, 6, 8, 9, 10, 12
12 - 3 = 9
a + 9.4= 16.6
a=7.2
a/9 = 9
a=81
Looking at a box and whisker plot; what fraction of the data is below the lower quartile?
1/4
Where can you find the lower quartile on a box and whisker plot?
The line on the left edge of the box; the start of the box
How do you find the three quartiles for a box and whisker plot?
Find the median of the data for Q2 and then the median of the data to the right and left of Q2.
What is the mode of the data set? 3, 5, 12, 6, 21, 19, 14, 8
No mode
a - 11.5 = 30
a=41.5
5g = 15
g=3
Looking at a box and whisker plot; what fraction of the data is above the median?
1/2
Find Q1, Q2 and Q3 of the following data: 10, 17, 8, 13, 6, 10, 16, 19
Q1: 9 Q2: 11.5 Q3: 16.5
Find the mean of the following data: 20, 16, 11, 10, 16, 10, 8, 7
12.25
What is mode?
The number that appears the most in a data set. If no number repeats, there is no mode.
9/5=r-1/5
a = 10/5 = 2
a/1.5 = 18
a=27
Looking at a box and whisker plot; what percent of the data is in the box?
50%
Find the lower & upper quartile of the data: 4, 5, 2, 10, 3, 9, 5, 3, 8, 5, 6
Q1: 3 Q2: 5 Q3: 8
Find the mean AND median of the following data: 12, 20, 2, 3, 5, 6, 8
Mean: 8
Median: 6
Find the mode AND range of the following data: 10, 12, 8, 13, 6, 10, 16
Range: 16-6 = 10
Mode: 10
x + 1/2 = 3/4
a=1/4
b/(1/4)=4/3
b=3