what is the mean of 42, 21, 36, 8 and how did you work it out
and what extaly is mean ?
what is the median of 42, 21, 36, 8 and how did you work it out
and what extaly is median ?
what is the range of 42, 21, 36, 8 and how did you work it out
and what extaly is range ?
tx i am realy stuck .....
2007-12-01 03:58:57 · 3 answers · asked by coolboy 2 in Science & Mathematics ➔ Mathematics
the mean is the sum of all the values divided by the number of values. so the mean in this case would be (42+21+36+8)/4
the median is the MIDDLE value. so you would put the numbers in increasing value and find the middle value. 8, 21, 36, 42. the median would be somewhere between 21 and 36 (the middle values). since there is an even number of values, you would then find the average, or mean, of the two.
(21+36)/2
the range is the interval in which your values lie. so to find the range, you would subtract the smallest value from the highest.
range = 42-8
hope this helps!
2007-12-01 04:05:11 · answer #1 · answered by Ln 2 · 1⤊ 0⤋
Mean is the average. All you need to do is add all the numbers and divide it by the total number of terms:
42 + 21 + 36 + 8 = 107 / 4 = 26.75
Median is the middle term. You have to arrange them in order.
42, 36, 21, 8 or 8, 21, 36, 42.
Since you have two middle terms, the median is the average of the two numbers.
36 + 21 / 2 = 28.5
The range is the difference between the highest and lowest values:
Arranging them, 8, 21, 36, 42.
The range is 42 - 8 or 34.
2007-12-01 12:05:46 · answer #2 · answered by Luke C 3 · 1⤊ 0⤋
The mean is just the average. Add up the 4 numbers, then divide the answer by 4 ( There are 4 numbers in the problem)
(The answer is 26.75)
The median is the number in the middle when you write all the numbers in the problem in order. Since you only have 4 numbers the median is between 21 and 36
The range is the difference between the highest and lowest number, so the range is 34 (42 - 8 )
2007-12-01 12:08:23 · answer #3 · answered by Rich 7 · 0⤊ 0⤋