Five students scored 80 on a test. five students scored 85, and five students scored 90. find the mean and the median of the data set. how do the two values compare?

The median is equal to 85, the mean is 85. the two values compare because they equal each other  

Step-by-step explanation:

To find the Median you list all the numbers given in order least to greatest and the Median is equal to the number in the middle, in this case the Median was equal to 85.

To find the Mean you take the sum of all numbers given and divide by the total number of numbers given. For example,

80+80+80+80+80+85+85+85+85+85+90+90+90+90+90=1275

1,275/15=85

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

24 units

step-by-step explanation: