the numbers are:
39, 40, 40, 43, 44, 45, 46, 47, 48, 52, 55
the first quartile is the median of the lower half, and the third quartile is the median of the upper half. How do I split 11 numbers into two even halves?
2007-08-19 09:20:38 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Very carefully. For all intent purposes, you can use the third-highest and third-lowest numbers for your 1st and 4th quartile. You usually don't worry too much about the middle two.
If you want to be a purist, you can do a weighted average, but for numbers to this accuracy, it's overkill.
2007-08-19 09:31:21 · answer #1 · answered by cattbarf 7 · 0⤊ 0⤋
Second Quartile
2016-10-06 03:25:36 · answer #2 · answered by ? 4 · 0⤊ 0⤋
2ºQ =X(6)= 45
1ºQ =(Median of 5) = X(3)= 40 [3=(1+5)/2]
3ºQ= (Median of 5) = X(9) =48 [9=(7+11)/2]
Saludos.
2007-08-19 10:21:48 · answer #3 · answered by lou h 7 · 0⤊ 0⤋
add them and divide by 4
2007-08-20 02:02:40 · answer #4 · answered by ccnice1 5 · 0⤊ 0⤋