STEM AND LEAF PLOT (DEGREES C)
STEM |
|
L |
E |
A |
F |
0 |
7 |
7 |
|
|
|
1 |
4 |
7 |
8 |
8 |
9 |
2 |
1 |
2 |
5 |
6 |
6 |
3 |
5 |
9 |
|
|
|
4 |
4 |
6 |
6 |
6 |
|
5 |
1 |
6 |
|
|
|
Sum for each stem:
0: 14 14 (2)
1: 36 + 5*10=86 (5)
2: 20 + 5*20=120 (5)
3: 14 + 2*30=74 (2)
4: 22 + 4*40=182 (4)
5: 7 + 2*50=107(2)
TOTAL: 583 (20)
TRUE AVERAGE: 583/20=29.15
MEDIAN (middle value): 25.5 (average of 10th and 11th datum, average from plot).
The high temperature region where the temperature peaks at 46C is stem 3, 4, 5 and the average (median) is 46.
There are 8 values for stems 3-5. True average is (74+182+107)/8=363/8=45.375, close to the median 46.