Can someone please help me?

As cars passed a checkpoint, the following speeds were clocked and recorded.
Speed (mph): 55 62 61 54 68 72 59 61 70

16. What are the minimum, first quartile, median, third quartile, and maximum of the data set?

I dont know how to do the quartiles

Question

Can someone please help me?

As cars passed a checkpoint, the following speeds were clocked and recorded. 
Speed (mph):   55 62 61 54 68 72 59 61 70

16.  What are the minimum, first quartile, median, third quartile, and maximum of the data set?

I dont know how to do the quartiles

austinl · Answer

Quartiles are the halfway point between min median and max

anonymous · Answer

so the first quartile is 54.5?

austinl · Answer

Um,
$$\frac{Min + Median}{2}$$
I didn't take the time to do the math. If that is what you did then you are correct.

anonymous · Answer

no thats no what i did. but i have the answer now thanks!

austinl · Answer

No problem!

austinl · Answer

That is the first quartile.

anonymous · Answer

would i find the third quartile the same way?

austinl · Answer

$$Q_{3} = \frac{Median + Max}{2}$$
All you are doing is finding the midpoint between them.

anonymous · Answer

okay i think i got it thank you!

austinl · Answer

No problem!