Can you use a scientific calculator to find the mode and the meadian?

Answer 1

Finding the Mode and the Median are fairly easy and do not require the use of a calculator.

Consider this set of numbers as an example:
5, 7, 1, 1, 9, 8, 10, 8, 8


For #3, use this set:
5, 5, 7, 1, 1, 9, 8, 10, 8, 8


1.) Put ALL the numbers in sequential order. This is essential for finding the Median. It also helps depict what the Mode is.
(1, 1, 5, 7, 8, 8, 8, 9, 10)


2.) To find the Mode, choose the number that occurs the most. If there is more than one, then there is no mode, for there is always ONE mode.
In this case, it is 8.


3.) To find the Median quickly, count the number of numbers in your set. Add 1 to the amount of numbers in your set. Divide by 2. Then, count that many numbers into your set. If the previous quotient found has a ".5" in it, then you will have to find the average of the two numbers. (Note: This comes in handy for large number sets)
Example 1: (1, 1, 5, 7, 8, 8, 8, 9, 10) There are 9 numbers.
1/2(9 + 1) = 5 numbers in.

The median is 8.


Example 2: (1, 1, 5, 5, 7, 8, 8, 8, 9, 10)
1/2(10+1) = 5.5
The median is in between 7 and 8.
1/2(7+8) = 7.5


Keep in mind that you don't arbitrarily add .5 to the 5th number.
Example 3:
(10, 10, 40, 40, 40, 81, 82, 82, 95, 100)


1/2(40+81) = 60.5