Watch the videos below then answer these two questions: 1. Explain the difference between: mean, median and mode. How can you remember how they are different? Which one is the actual average? 2. Find the mean, median, mode and range of the following data set: 4,5,7,7,7,8,9,10,11,12,12 Click the links to watch each video: Mean, Median, Mode, and Range (Links to an external site.) How Do You Find the Mean of a Data Set? (Links to an external site.) How Do You Find the Median of a Data Set? (Links to an external site.) How Do You Find the Mode of a Data Set? (Links to an external site.) How Do You Find the Range of a Data Set? (Links to an external site.) What is the Mean of a Data Set? (Links to an external site.) What is the Median of a Data Set? (Links to an external site.) What is the Mode of a Data Set? (Links to an external site.)

Average = Mean = "typical" or "middle"=> central

Ex:

4+3+1+6+1+7

Arithmetic Mean- 4+3+1+6+1+7  over the amount of numbers in this case 6. So this fraction equals 22 over six or 3 and 2/3.

To find the Median order the numbers from least to gratest. the circle the middle number.

Ex: 0, 7, 50, 10,000, 1,000,000

Circle the 50 since it is on the middle

If there is two numbers in the middle circle both then find the middle in between both numbers.

Ex: 1, 1, 3, 4, 6, 7,

Circle the 3 and 4.

Find the halfway point in between, in this case, 3.5.

Mode is the number that shows up the most in a group of numbers.

Ex: 4, 3, 1, 6, 1, 7

The one shows up twice while the other numbers show up once.

Hope this helps. :)

Try the questions yourself.

If you need help friend me and I can help with the questions.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

215.92 dollars is the answer