the following test scores were recorded for a student :95,90,88,84,90,76,86.
a. 95
b. 88
c. 84
d. 87
so is it d.
the following test scores were recorded for a student: 84,76,72,72,84,86
a. 84
b. 79
c. 72
d. 80
not sure about the answer.
the following test scores were recorded for a student :69,66,64,63,72,68
a. 68
b. 63
c. none
d. 67
so is it d.
2006-12-06 03:37:33 · 6 answers · asked by Chunky 1 in Science & Mathematics ➔ Mathematics
a)
s = (95+90+88+84+90+76+86) / 7
s = 609 / 7
s = 87
letter (d)
b)
s = (84+76+72+72+84+86) / 6
s = 474 / 6
s = 79
letter (b)
c)
s = (69+66+64+63+72+68) / 6
s = 402 / 6
s = 67
letter (d)
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2006-12-06 04:00:23 · answer #1 · answered by Luiz S 7 · 0⤊ 0⤋
median is the middle datum in a set of ordered data
first test ordered data: 76 84 86 88 90 90 95; median = 88
second test: 72 72 76 84 84 86; median = (76 + 84) / 2 = 80
third test: 63 64 66 68 69 72; median = (66 + 68) / 2 = 67
2006-12-06 11:51:10 · answer #2 · answered by jimbob 6 · 0⤊ 0⤋
95, 90, 88, 84, 90, 76, 86 --- Put these in numerical order...
76, 84, 86, 88, 90, 90, 95 --- Find the middle number...
ANSWER: (b) 88
84, 76, 72, 72, 84, 86 --- Put in numerical order...
72, 72, 76, 84, 84, 86 --- Average the two middle numbers...
(76 + 84) / 2 =
ANSWER: (b) 79
69, 66, 64, 63, 72, 68 --- Put in numerical order...
63, 64, 66, 68, 69, 72 --- Average the two middle numbers...
(66 + 68) / 2 =
ANSWER: (d) 67
2006-12-06 11:49:36 · answer #3 · answered by Anonymous · 0⤊ 0⤋
median is the middle value when arranged in ascendingor descendingorder
1.88
2.76 ad 84 or 76+84/2
=80
3.66 and 68 or 66+68/2
=67
2006-12-06 11:42:53 · answer #4 · answered by raj 7 · 0⤊ 0⤋
Careful, some of your answers are wrong.
To find the median, put the scores in order. the median is the score in the middle.
However, if there are an EVEN number of scores (like in your second question), the you take the TWO scores in the middle and average them (add them and divide by 2).
2006-12-06 11:40:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋
its b,a,a in ascending order.
2006-12-06 11:46:20 · answer #6 · answered by geniusgearguy 2 · 0⤊ 0⤋