Work out the
mean
after the change
.
Starting list
After we add a value
Mean
—
Median
—
Range
—
The change:
Add a data point
Remove a data point
Then find the:
Mean
Median
Range
↻ New list
Show the before & after
Your turn — the new mean is:
Check
Recompute from scratch on the changed list.
Mean
= new sum ÷ new count,
median
= re-order and take the middle,
range
= new max − new min.