Question

http://www.studymode.com/essays/Math-Part-One-1420746.html
from those scores I need help with 3. Draw side-by-side box-and-whisker plots for the salaries of the employees for both departments (using one number line). Draw another pair of side-by-side box-and-whisker plots for the ages of the employees for both departments (using one number line). Tell how you would you interpret these box-and-whisker plots when you present them to the owner.

Answer 1

@dan815

Answer 2

@robtobey

Answer 3

can someone please explain what Im supposed to do because Im lost

Answer 4

@Compassionate

Answer 5

@Haseeb96

Answer 6

@Daniellelovee
Do you know what is a box and whisker plot?

Answer 7

yes

Answer 8

Do you know what information is required to make the plot?

Answer 9

http://intermath.coe.uga.edu/dictnary/images/stats/bxnwhskr.gif

Answer 10

Good, you put some research on it.!
So do you know what is another name for 50 percentile?

Answer 11

thats where I get lost

Answer 12

and I only have 25 more mins before I have to go take an exam :(

Answer 13

Data is basically divided into 4 equal sized parts.
Well, 50 percentile is also called median, or second quartile.
25 percentile is also called first quartile.

Answer 14

The following definition is from Google, perhaps it is less misleading.

"To create a box-and-whisker plot, you start by ordering your data (putting the values in numerical order), if they aren't ordered already. Then you find the median of your data. The median divides the data into two halves. To divide the data into quarters, you then find the medians of these two halves."

And here is a link describing how to draw a box and whisker diagram in an easy to understand way.
http://www.purplemath.com/modules/boxwhisk.htm

Answer 15

what confuses me the most were all the data I got on the 2 previous questions...

Answer 16

Recall that the median divides data into two equal parts AFTER data is sorted in increasing order.
If there are 7 values in your data, median is the 4th value (3 on each side).

Answer 17

"what confuses me the most were all the data I got on the 2 previous questions..."

Please explain!

Answer 18

which "previous" questions? Have they been posted elsewhere?

Answer 19

haha well do I use the mean and the deviation values into the chart?

Answer 20

yes because they are the same values we just have to make the graph which is where im struggling the most

Answer 21

As you have found, the B&W plot requires only the max, min, and the 3 quartiles.

Answer 22

It requires you to sort the data as well, that's why you were supplied with an excel file.

Answer 23

The mean and SD will/may be used for the interpretation part of the problem.

Answer 24

so ok let me see if I got this I would use my values to solve for the median adn then work my way trough?

Answer 25

Yes.

Answer 26

ok so they gave the values which were this
Employees 001 through 014 are all the employees in the sales department and employees 045 through 062 are all the employees in the advertising department.

Answer 27

and then I plug them in the line, and to find the median I would have to divide the middle numbers by 2 right?

Answer 28

what about 015 to 044, are they from somewhere else?

Answer 29

yes those were just online my real problem has different numbers but they are alike

Answer 30

Recall that you need to sort the values in ascending order, age, salary, separately for each department. That's a total of 4 sorts.

Answer 31

so 33.8, 42.1, 42.5,45.3

Answer 32

As long as the employees are all from the same department, you need to sort them by
- age
- salary

Do that for each department.

Answer 33

Are they salaries for the sales employees? There should be 15 of them. Can you post them all?

Answer 34

I cant my time passed and the 25 mins are up :/

Answer 35

Well, sorry about that.
In any case, 25 minutes should be sufficient for you test if you are familiar with the material.
I suggest you get help outside of test time so that you actually know how to do the work within the given time.
Good luck next time!