A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018 Algebra 1 Notes P74 111 Measures of Center and Variation
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Algebra 1 Notes
P74 111 Measures of Center and Variation
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Measures of Central Tendency
Mean Average
Median Order Numbers(Number in the Middle or Mean of two Middle Numbers)
Mode Most Frequent3 is the mode
2,3,3,4,5,6,8,9
= 40/8 = 5
= 4 + 5 = 9 9/2 = 4.5
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
If No Outlier is in Data Use Mean...
If Outlier is in Data Use Median...
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
If you want Most Popular use Mode...
If you want "Variation" of the Data...
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
An amusement park hires students for the summer.
The students’ hourly wages are shown in the table.
a. Find the mean, median, and mode of the hourly wages.
b. Which measure of center best represents the data? Explain.
The table shows the annual salaries of the employees of an auto repair service.
(a) Identify the outlier.
How does the outlier affect the
mean, median, and mode?
(b) Describe one possible explanation for the outlier.
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
3,4,5,6,7,7,8,9,9,10,11,12,14,16,18
Measures of Variation
Two reality cooking shows select 12 contestants each. The ages of the contestants are shown in the tables. Find the range of the ages for each show. Compare your results.
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Assignment???
Please put your name and class period at the top of the homework.Also include the homework number.
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Find the mean, median, mode, range, and standard deviation of the
altitudes of the airplanes when each altitude increases by 1 miles.
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Standard Deviations
3,4,5,6,7,7,8,9,9,10,11,12,14,16,18Measures of Variation
Standard Deviation
A1V111MeasuresOfCenterAndVariation.notebook April 03, 2018
Measures how much values in a data set vary, or Deviate, from the mean...
Standard Deviation
Lowercase Sigma