what is: the mean, mode, medeian and range??

Question

i have a test tommorrow!

Answer 1

mean = add the numbers up and divide by the amouth of numbber .. like 2 , 3 ,4 .. 2+3+4 = 9 ... divide by 3 .. equals 3 .. the mean of those numbers is 3 ! ./.. the median is the middle number easy ! .. the mode is the number that pops up the most .. range is like . .the highest number take away the lowest .. like 2-10 .. the range is 8 !

Answer 2

The mean, median and mode are types of average.

The range gives a measure of the spread of a set of data.

This section revises how to calculate these measures for a simple set of data.

It then goes on to look at how the measures can be calculated for a table of data.

Calculating the Mean, Median, Mode and Range for simple data
Following examples show how to calculate the mean, median, mode and range for two sets of data.

Set A contains the numbers 2, 2, 3, 5, 5, 7, 8 and
Set B contains the numbers 2, 3, 3, 4, 6, 7.

The Mean: To find the mean, you need to add up all the
data, and then divide this total by the number of values in the data.

For Set A
Adding the numbers up gives:
2 + 2 + 3 + 5 + 5 + 7 + 8 = 32
There are 7 values, so you divide
the total by 7: 32 ÷ 7 = 4.57...
So the mean is 4.57 (2 d.p.)

For Set B
Adding the numbers up gives:
2 + 3 + 3 + 4 + 6 + 7 = 25
There are 6 values, so you divide
the total by 6: 25 ÷ 6 = 4.33...
So the mean is 4.33 (2 d.p.)

The Median: To find the median, you need to put the values in order, then find the middle value. If there are two values in the middle then you find the mean of these two values.

For Set A
The numbers in order:
2 , 2 , 3 , (5) , 5 , 7 , 8
The middle value is marked in
brackets, and it is 5.
So the median is 5

For Set B
The numbers in order:
2 , 3 , (3 , 4) , 6 , 7
This time there are two values in
the middle. They have been put
in brackets. The median is found
by calculating the mean of these
two values: (3 + 4) ÷ 2 = 3.5
So the median is 3.5

The Mode: The mode is the value which appears the most
often in the data. It is possible to have more than one mode if there is more than one value which appears the most.

For Set A
The data values:
2 , 2 , 3 , 5 , 5 , 7 , 8
The values which appear most
often are 2 and 5. They both
appear more time than any
of the other data values.
So the modes are 2 and 5

For Set B
The data values:
2 , 3 , 3 , 4 , 6 , 7
This time there is only one value
which appears most often - the
number 3. It appears more times
than any of the other data values.
So the mode is 3

The Range: To find the range, you first need to find the lowest and highest values in the data. The range is found by subtracting the lowest value from the highest value.

For Set A
The data values:
2 , 2 , 3 , 5 , 5 , 7 , 8
The lowest value is 2 and the
highest value is 8. Subtracting
the lowest from the highest
gives: 8 - 2 = 6
So the range is 6

For Set B
The data values:
2 , 3 , 3 , 4 , 6 , 7
The lowest value is 2 and the
highest value is 7. Subtracting
the lowest from the highest
gives: 7 - 2 = 5
So the range is 5

In addition, the following link will give you more information and practice questions about this topic:

http://www.cimt.plymouth.ac.uk/projects/mepres/book8/bk8i5/bk8_5i2.htm

Answer 3

Let's define each of the words and give an example.

Consider the set of numbers 80, 90, 90, 100, 85, 90. They could be
math grades, for example.

The MEAN is the arithmetic average, the average you are probably used
to finding for a set of numbers - add up the numbers and divide by how
many there are: (80 + 90 + 90 + 100 + 85 + 90) / 6 = 89 1/6.

The MEDIAN is the number in the middle. In order to find the median,
you have to put the values in order from lowest to highest, then find
the number that is exactly in the middle:

80 85 90 90 90 100
^
since there is an even number of values, the MEDIAN is
between these two, or it is 90. Notice that there is
exactly the same number of values ABOVE the median as
BELOW it!

The MODE is the value that occurs most often. In this case, since
there are 3 90's, the mode is 90. A set of data can have more than one
mode.

The RANGE is the difference between the lowest and highest values.
In this case 100 - 80 = 20, so the range is 20. The range tells you
something about how spread out the data are. Data with large ranges
tend to be more spread out.

Answer 4

Let's start with...
range: the set of all values attained by a given function throughout its domain.
Basically it's the numbers that you're dealing with, 4, 5, 2, 27, 30. You're ranging from 2 to 30

Median: the middle number in a given sequence of numbers, taken as the average of the two middle numbers when the sequence has an even number of numbers... Basically you have six numbers, 1, 2, 3, 4, 5 the Median would be 3 because it is the middle tearm. Mediam = middle (basically)

Mode: The most frequent number that shows up, 4, 5, 6, 4, 2 - with this, 4 would be the mode

Mean: 'The mean teacher averages the grades' essential, finding the mean is to find the average of the numbers. Add them up, then divide by how many there were. 2, 4, 6, 3, 5
added together they would equal 20. then you would divide it by 5, because there are 5 numbers there. The mean of those numbers would equal out to be 4.

I really hope this helps, good luck with your test! :)

Answer 5

mean

If there is a set of 5 numbers (10 20 30 40 50)
add the numbers in the set = 150. Divide 150 by the numbers in the set. There are 5 numbers in the ser

150 / 5 = 30

30 is the mean

- - - - - - - - - -

Median

is there are 5 numbers in a set ( 5 10 15 20 25) The median is the center of middle of the set of numbers.

15 is the median

- - - - - - - - - - - - - -

Mode

In a set of numbers ( 2 4 6 8 8 8 9 10 12). The number that occurs more frequently is the mode.

8 is the mode.

- - - - - - - - - - -s-

Answer 6

MEAN is the the average; you add up all the numbers and divide by how many numbers are given.

MEDIAN is usually the middle term of a sequence of given numbers when u arrange them all by numerical order.. like if they give u 9, 1,3,2,5,6,7,8 u put them in order 1,2,3,4,5,6,7,8,9 SOOOO the middle term is...5

RANGE of the data set is the difference between the largest and smallest number in the set.

To find the range, you just subtract the smallest number from the largest number in the set.

In our sample data set the largest number is 5 and the smallest number is 1.

(1, 2, 3, 4, 5)


The MODE is the number that appears the most often if you are working with only one variable.

We are working with one variable, a set of numbers. To show how to figure out the mode, we need to change our sample set because each number only appears once in it.

THE NEW SAMPLE SET: (2, 4, 4, 6, 8, 10).

4 appears more than any other number in this set so 4 is the mode of the set



5 - 1 = 4


hope that answers it 4 ya :))

Answer 7

Mean = average (add all numbers together and divide by the quantity - 3 + 4 + 5 = 12/3 = 4
Median = the center number in the list ( 3, 4, 5, 6 then median = 4.5)
Range = difference between largest and smallest numbers ( 3, 4, 5, 6 then range = 6-3
Mode = most commonly used number (3, 3, 4, 5, 5, 5, 6 mode = 5)

Good luck on your test

Answer 8

mean is the # after adding all #'s and then dividing by the # of #'s u have
ex. 24+67+4+5=100 then divide by 4 because there is only four #'s you added = 25[mean]

Median: put all #'s in order (lowest to highest)
ex. 4,5,24,67 & chose whatever # is left in the middle by crossing each # out from each side until left with 1, but like there are 2 #'s left, add the 2 #'s & divide by 2
ex. 5+24=29/2=14.5=[median]

Range: is the easiest, choose the highest and lowest #, then subtract
ex. 67-4=63=[range]

Mode: is a # repeated the most
ex. 2,54,6,23,8,54,9
54=[mode] 54 was repeated twice

Answer 9

Mean is the average- add all of the numbers and divide by how many numbers you have. To remember mode and median: Mode=Most (the number that appears the most) Median=Middle (the number in the middle when you order your numbers from least to greatest) The Range is subtracting the smallest number from the highest number. Good Luck

Answer 10

Mean is the average. Just add all the numbers together and divide by the number of numbers you added for example. 23+23+45=91 91divided by 3 = 30.3 - thats the average.

Mode is the number that is used the most often. For example:
12 , 13, 14, 12, 15, 12, 17, 12 - The answer is 12

Range is the big number subtracted by the smaller number. For example: 12, 13, 15, 17, 23, 10, 14
23-10 = 13 - is your answer

Any question email me at [e-mail]
I'm a student who's taking math classes
hope I was of help