Stage 9 - Q8 - 5 marks
20214
Add one valid new A observation of 94 s to the original diagram. Calculate the new range and median, and compare how much each changes.
Group A
Stem
Group B
2
5
7
7
6
8
3
0
2
4
6
7
9
1
3
5
7
8
4
0
2
5
0
0
4
6
8
\(\text{A key: }5\mid 2=25\text{ s}\)
\(\text{B key: }2\mid 6=26\text{ s}\)
Hint
Recalculate the middle position after the sample size changes.