Mean
What is the definition of mean?
The average
What is the definition of MOST?
The number that occurs the most.
What is the definition of MEDIAN?
The midpoint value of a data set, where the values are arranged in ascending or descending order.
What is the definition of RANGE?
The difference between the highest and lowest values.
Who is the school principal?
Mr. Singh
What are the steps to finding the mean?
1. Order your data set from least to greatest.
2. Add up all of the numbers in your data set.
3. Divide by the number of Data points in your data set.
What are the steps to finding the mode?
1. Order your data set from least to greatest.
2. Which number (or numbers) occurs the most.
-(There can be NO mode)
What are the steps to finding the MEDIAN?
To find the median:
1. Order your data set from least to greatest.
2. If there is an odd amount of numbers in the data set just isolate the number in the middle.
3. If there is an even amount of numbers in the data set, just take the average of the two middle values.
What are the steps to finding the range?
To find the Range:
1. Order your data set from least to greatest.
2. Subtract the highest and lowest value.
-Does Ms. Papalardo have a cat?
-Does Ms. Magluilo have a dog?
-Yes. Baci :)
Find the Mean:
5, 2, 1, 1, 3, 6
3
Find the Mode:
3, 2, 1, 1, 5
1
Find the Median:
3, 2, 1, 1, 5
2
Find the Range:
3, 2, 1, 1, 5
4
What is our school mascot?
Bobcat
Find the Mean:
7, 13, 6, 2
7
Find the Mode:
6, 0,0, 0, 2, 4, 2, 2
0 and 2
Find the Median:
6, 0, 2, 4, 2, 3
2.5
Find the Range:
6, 0, 2, 4, 2, 3
6
A student received the following test grades in Math
95%
100%
85%
75%
What do you think her report card grade should be?
88.75% is her average. That is her report card score.
Can the mean be greater than the greatest value in the data set? Explain why or why not.
No. The mean would be less as the mean is the average.
Find the mode:
1, 2, 8, 6, 0, 3, 7,10, 5, 15
No mode.
Would you rather your teacher use the median or the mean to calculate your report card grade for math? Explain.
The mean because the mean is the average. It doesn't make sense to use the grade that is in the center of the data or values.
Why wouldn't you want your teacher to use the range to calculate your report card grade for math? Explain.
No, because the range tells how spread out data is and is not the average.
Which of the following should your teacher use to calculate your report card grade for math? Why?
A. Mean
B. Mode
C. Median
D. Range
A. Mean