Answer:
5.2
Step-by-step explanation:
1.3, 1.9, 4.9, 4.9, 5.5, 8.4, 8.7, 9.4
the median is the middle number, so it would be in between 4.9 and 5.5
the answer is 5.2
Answer:
Step-by-step explanation:
The standard deviation is the square root of the variance, and the variance is found by using the mean. So we will do that first. I will use the population variance as opposed to the sample variance since our set of numbers is small.
The mean: 8 + 12 + 15 + 17 + 18 = 70 and divide that by 5 to get
and use this to find the variance in the formula:
it is a bit difficult to enter that formula in correctly, but here's how it works mathematically:
Squaring this ensures us that we don't end up with zero, which would be useless.
so
which means that the standard deviation is
s = 3.633
(If you do it with n-1 = 4 in the denominator of the variance, you get a standard deviation of 4.062)
Answer:
not really good at maths. 15.33
Step-by-step explanation:
3(x-5)-7=3×8
3x-15-7=24
3x =24+15+7
3x = 46
Three will divide it's self to give you one and divide 46 to give you 15.333
(correct me if i'm wrong)
The answer would be 9,631.473. Since there is a 5 after the two, you round up one value. Hope this helps!
X≈2.48207399,<span>−<span>2.14874066</span></span>
