MATHEMATICS
posted by DAN .
How do you find the average deviation from these numbers:
290 , 270 , 250 , 300 , & 290.
I think their mean is 280

MATHEMATICS 
Steve
average deviation would be the average of the deviations from the mean.
If the mean is 280, then the deviations are
10 10 30 20 10
figure the average of those numbers. 
MATHEMATICS 
DAN
how did u get those numbers?

MATHEMATICS 
ExplanationCentral
The deviation is the difference between a value and the mean.
So the deviations are:
(290280) (270280) (250280) (300280) (290280)
This gives you: 10 10 30 20 10
The average is the sum of the numbers divided by the number of numbers (5).
so that would be 0/5 = 0.
Respond to this Question
Similar Questions

Statistics
I have a couple questions I answer for home work could some look atthem and tell me If I am doing them right I also am having problems understanding the variance and standard deviation are the site you can suggest that would help with … 
adult education
The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 290 hours and a standard deviation of 6 hours. What percentage of the bulbs have lifetimes that lie within 1 standard deviation to either side … 
statistics
There are 4 small franchise Quick Food Stops in the Columbus area. Numbers of burgers sold on a daily basis was recently studied. There were 6 2month periods studied. At the 0.05 level of significance determine of there is any difference … 
ExcelExponential Fits
Hey Im trying to plot this set of data: 0 0 10 0.6 20 1.01 30 1.428 40 2 50 2.3 60 2.57 70 2.8 80 3.05 90 3.35 100 3.54 110 3.73 120 3.9 130 4.08 140 4.25 150 4.39 160 4.53 170 4.65 180 4.754 190 4.846 200 4.943 210 5.011 220 5.111 … 
maths
a roofer charges $25 per hour for himself and $15 per hour for his assistant. On a recent job the assistant worked 2 hours less than the roofer and the tot charge for labour was $290. Let r be the number of hours that the roofer worked. … 
math
write the multiplication represented by the partial products. then write the product. 1. 800+280+60+21 2.600+40+180+12 3.2000+280+300+42 4.3600+300+300+25 5.2100+560+0+0 6.7200+270+320+12 
math check
Round 210,290,290,290.21029 to the nearest ten million 210,300,000,000 
Math
The assignment is Compare Estimated Quotients. 3) 654.3/82 and 289.5/31 654/82 and 290/31 654/82=7 and 290/31=8 So 7 is less than 8 Please let me know if I am correct on this or not. 
physics
A dive bomber has a velocity of 290 m/s at an angle θ below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, which subsequently hits a target on the ground. The magnitude of the displacement from … 
Math3( Please Help Assignment Due)
80 U2 songs (in seconds) were selected at random. Assume that the data is normally distributed and that the bands entire collection of songs has a mean and standard deviation equal to those calculated(mean=289.7 or 290, standard deviation= …