The following table shows the probability of rolling the numbers 1 through 7 on a fair seven-sided die.
X 1 2 3 4 5 6 7
P(X) 1/7 1/7 1/7 1/7 1/7 1/7 1/7
What is the standard deviation of the random variable X, "the number that comes up on the die?"
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
im not sure about deviation
lol me neither...but i know its a decimal i forgot how to do the work for this...
Not the answer you are looking for? Search for more explanations.
It's kind of a pain, but to find the standard deviation you have to square the difference of each point to the mean, then find the mean of those numbers, and finally take the square root.
I think in this case we would see a mean of 4 ((1+2+3+4+5+6+7)/7). So you'd square 1-4, 2-4, 3-4, 4-4, etc, then add those up and divide by 7 to find their mean, then take the square root of that (which will indeed get you 2).