Name________________________
COMPARING AVERAGES
GRAPHICALLY #1--KEY
Directions: Find the mean, median, mode, and range for each stem and leaf plot below. Remember, in a stem and leaf plot 6|3 means 63. For example, in the first plot, Chris’ lowest score is 71, and Cody’s lowest score is 70.
Mean is the sum of the data divided by the number of data points. Median is the middle data point of the ordered data. Mean is the sum of the data divided by the number of data points. Mode is the data point(s) that appears the most. Range is the difference between the largest data point and the smallest data point.
Round all of your answers to the nearest tenth.
Chris |
Test
Scores |
Cody |
|
6 |
|
4 3
2 1 |
7 |
0 6 8 8 |
5 5 |
8 |
1 8 |
9 7
5 |
9 |
5 7 9 |
0 0 |
10 |
0 0 |
Chris: Mean _86.5__ Median__85_ Mode 85 & 100 Range_29__
Cody: Mean _87.5__ Median_88__ Mode 78 & 100 Range_30__
Joseph |
Points
Scored |
Jennifer |
9
6 3 |
1 |
1 3 6 |
4 2
0 0 |
2 |
0 6 8 8 |
5 5 |
3 |
1 8 |
8 7
5 |
4 |
5 7 |
1 |
5 |
|
Joseph: Mean _30.4__ Median_20__ Mode 20 & 35 Range_38_
Jennifer: Mean _27.6__ Median_28__ Mode_28__ Range_36_
Tiffany |
$$
Earned |
Terry |
1
1 1 |
6 |
0 2 |
0 |
7 |
0 |
5 |
8 |
1 8 |
9 7
5 |
9 |
5 7 9 |
0 0 |
10 |
0 |
Tiffany: Mean _82.9__ Median_90__ Mode_61__ Range_39_
Terry: Mean _83.6__ Median_88__ Mode None Range_40_