Posted by **lavena** on Sunday, June 20, 2010 at 6:45pm.

find the mean, median and mode of the quiz scores 74, 85, 89, 93, 85 & 90.

- pre algebra -
**Ms. Sue**, Sunday, June 20, 2010 at 6:51pm
For the mean, add these numbers together and divide by 6.

For the median, arrange the numbers in order.

74, 85, 85, 89, 90, 93

The middle number is the median. In this case -- it's half way betwen 85 and 89 -- 87.

This site explains all three of these terms.

http://www.purplemath.com/modules/meanmode.htm

- pre algebra -
**lavena**, Sunday, June 20, 2010 at 7:00pm
thank u

- pre algebra -
**lavena**, Sunday, June 20, 2010 at 7:01pm
for the mean i got 86, median 89 and mode 85

- pre algebra -
**Ms. Sue**, Sunday, June 20, 2010 at 7:08pm
I already told you the median.

The other two are correct.

- pre algebra -
**jenny**, Monday, July 5, 2010 at 12:40pm
With a mean of 72, and SD of 10 of High temprature:

Temprature of 93 is how many SD above mean?

Temprature of 54 is how many SD below mean?

Show your calculations.

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