12 pupils took part in test. There scores are:
35, 26, 32, 28, 19, 43, 47, 22, 35, 32, 28, 36
a) Calculate the range of Scores.
b) Caculate the mean score.
c) I sat the test a week before. I scored 27. How do I compare to the mean score.
2007-02-05 05:46:59 · 14 answers · asked by aladinsane 4 in Science & Mathematics ➔ Mathematics
1) range 19 - 47
b) mean = 31.9 = 32
c) students did 84.375% worse on this test
2007-02-05 05:52:43 · answer #1 · answered by Dr Dave P 7 · 0⤊ 0⤋
The lowest score is 19 and the highest is 47 the range (a) therefore is from 19 to 47.
b) The mean (average score) is all scores added together divided by 12.
= 383 ÷ 12 = 31.92
c) You were below average.
2007-02-05 06:06:35 · answer #2 · answered by Norrie 7 · 0⤊ 0⤋
The range of the score is simply the largest score minus the smallest score and is 47-19=28.
The mean score is the average of all the scores added together and this is 383/12=31.92.
You are obviously below the mean score of this small sample, but these students may not be typical.
2007-02-05 07:39:48 · answer #3 · answered by lester_day 2 · 0⤊ 0⤋
a) range = largest - smallest = 47 - 19 = 28
b) mean = sum of scores / 12 = 383 / 12 = 32
c) You scored 27 which is 5 marks below the mean value.
Perhaps you must do some extra work in order to improve your marks in this subject?
Good luck anyway.
2007-02-05 06:12:04 · answer #4 · answered by Como 7 · 0⤊ 0⤋
a) Range = largest - smallest
= 47 - 19
= 28
b) Mean = Total Score / Number of Scores
= 386 / 12
= 32.16 (rounded down = 32)
c) You scored lower than the mean mark... Not sure what else to say here lol!
2007-02-05 06:02:43 · answer #5 · answered by ? 2 · 0⤊ 0⤋
Range 19 to 47. Mean 31.91 You were approx 4 marks worse.Mean is the average score.
2007-02-05 06:00:37 · answer #6 · answered by Anonymous · 0⤊ 0⤋
A)range = highest - lowest... that's 47 -19 or 28
B)mean = (sum of all scores) / (number of scores)
C) compare 27 to the mean obtained in part b.
2007-02-05 05:53:15 · answer #7 · answered by bequalming 5 · 0⤊ 0⤋
put all the scores in order - lowest to highest
the range is the lowest score to the highest score, so 19-47
the mean is all the score totals added together, divided by the number of scores, which is 12
compare 27 to the mean score you have calculated - if 27 is above the mean score, you did better, if its below you did worse
2007-02-05 05:52:44 · answer #8 · answered by G*I*M*P 5 · 1⤊ 1⤋
The calculation of the scores is 351 / The average is 29.25.
Your score falls shy of the 50% mark 27 vs 29.25
2007-02-05 06:03:18 · answer #9 · answered by whatevit 5 · 0⤊ 0⤋
a) take away the lowest score from the highest
b) add up all the scores then divide by the number of scores that there are, in this case 12.
2007-02-05 06:56:52 · answer #10 · answered by Anonymous · 0⤊ 0⤋
Range
Bigget number - smallest number
Mean
Add them all up and divide the answer by the number of pupils (12)
Better or worse than the mean? You work it out!
2007-02-07 19:24:06 · answer #11 · answered by Robert S 2 · 0⤊ 0⤋