Central Tendency and Range
Mean = average (sum of all the numbers in the set) divided by how may numbers in the set
ex: { 2,4,2,4} When you add all of the numbers you will get 12 then divide it by 4 because there are 4 numbers in the set. Your answer would be 3.
Median – Put numbers in the data set in order, the middle number is the median.
If you have an even number of numbers it would be the number between the two numbers.
Ex: {2,2,4,4} the middle number would be between 2 and 4 which is 3. Example: {2,3,4} the middle number would be 3.
Mode – the number that occurs most frequently. If there is no number that shows up more than twice, there will be no mode.
Example: {2,3,4} = no mode
Example: { 2,2,4,4} = 2 and 4 mode
Example: { 2,3,2} = 2 mode
Range – difference between the lowest number and the highest number.
Example: {2,3,4} the difference between 4 and 2 is 2. The range would be 2
Mean = average (sum of all the numbers in the set) divided by how may numbers in the set
ex: { 2,4,2,4} When you add all of the numbers you will get 12 then divide it by 4 because there are 4 numbers in the set. Your answer would be 3.
Median – Put numbers in the data set in order, the middle number is the median.
If you have an even number of numbers it would be the number between the two numbers.
Ex: {2,2,4,4} the middle number would be between 2 and 4 which is 3. Example: {2,3,4} the middle number would be 3.
Mode – the number that occurs most frequently. If there is no number that shows up more than twice, there will be no mode.
Example: {2,3,4} = no mode
Example: { 2,2,4,4} = 2 and 4 mode
Example: { 2,3,2} = 2 mode
Range – difference between the lowest number and the highest number.
Example: {2,3,4} the difference between 4 and 2 is 2. The range would be 2