need assistance just to see if i did it correct!

[paris567]

question:
my answer:
Mean = 86.5 Range= 69. Median= 80 Mode=either 74 or 85?

 

[tkhunny]

You must SHOW YOUR WORK. How do we know you didn't just copy your answers from somewhere? It is SO MUCH more difficult to help you if you show us nothing on which we can form an opinion or course of action.

How did you get Mean = 86.5?
How did you get Range = 69?
How did you get Median = 80? Does the median have to be a member of the set you started with?
How did you get Mode = 74 or 85? Must you pick, or can it be both?

There are definitions for these things. Use the definitions and SHOW YOUR WORK.

 

[paris567]

for the mean and, median i entered all of the numbers from the question into my calculator under STAT and than clicked 2nd stat enter enter. for a graphing calculator. and from there i collected my answers.
the median doesn't have to be a set i started with. the range i did 74-146 which gave me 69 and for the mode, i choose the numbers that repeated themselves many times and 74 and 85 both repeated themselves twice

 

[JeffM]

The problem with entering things into a calculator is that we cannot help you when you are wrong.

Your answer for mean and median are correct. You have a good calculator and entered the data correctly. Whether you understand what it all means is not something we can help you with because the calculator did the work. Calculators are great for doing calculations, but the person who designed the calculator was the one who had to think.

Your answer for the range is incorrect.

Your answer for the mode is not quite right.

 

[tkhunny]

for the mean and, median i entered all of the numbers from the question into my calculator under STAT and than clicked 2nd stat enter enter. for a graphing calculator. and from there i collected my answers.
the median doesn't have to be a set i started with. the range i did 74-146 which gave me 69 and for the mode, i choose the numbers that repeated themselves many times and 74 and 85 both repeated themselves twice

That's the spirit. It is better to put all this information in the very first post.

 

[Dr.Peterson]

for the mean and, median i entered all of the numbers from the question into my calculator under STAT and than clicked 2nd stat enter enter. for a graphing calculator. and from there i collected my answers.
the median doesn't have to be a set i started with. the range i did 74-146 which gave me 69 and for the mode, i choose the numbers that repeated themselves many times and 74 and 85 both repeated themselves twice

Do you understand that a set of data can have more than one mode (or no mode at all)? So the answer there is not "either 74 or 85?", but "74 and 85"; there are two modes.

Do you see your error on the range? You said, "i did 74-146 which gave me 69", but 146 - 74 is not 69!

 

[Steven G]

If you subtract two even numbers or two odd numbers the result will be even. 69 is not even. That is one way to see that your answer is incorrect.