CPM Homework Help : MC2 Problem 5-23

Ms. Poppy has finished grading her students' tests. The scores were: $62$ , $65$ , $93$ , $51$ , $55$ , $76$ , $79$ , $85$ , $55$ , $72$ , $78$ , $83$ , $91$ , and $82$ . .

Find the median.
Hint (a):
Recall that the median is the middle number of an ordered set of data.

Find the range.
Hint (b):
The range is the interval of the values covered. To find it, take the difference between the highest and the lowest values.
Answer (b):
$42$

Find the mode.
Hint (c):
Recall that mode is the number that occurs the most often within a set of data.
Answer (c):
$55$

Find the quartiles.
Hint (d):
Along with the median, the quartiles divide a set of data into four groups of the same size.
Answer (d):
Lower Quartile $=62$
Upper Quartile $=83$

Find the mean.
Hint (e):
Recall that the mean refers to the average of a set of data.

Explore the problem with the eTool below.
Click the link at right for the full version of the eTool: MC2 5-23 HW eTool