CK-12-Basic Probability and Statistics Concepts - A Full Course

6.3. Standard Deviation of a Data Set http://www.ck12.org If we consider the spread of the data away from the mean, which is mea ...

http://www.ck12.org Chapter 6. Normal Distribution Curves number of hours that students use a cell phone in 1 day, and we relied ...

6.3. Standard Deviation of a Data Set http://www.ck12.org μ= 15 + 65 + 55 + 35 + 45 + 25 6 = 240 6 = 40 σ= √ ∑(x−μ)^2 n σ= √ 625 ...

http://www.ck12.org Chapter 6. Normal Distribution Curves x ̄= 15 + 65 + 55 + 35 + 45 + 25 6 = 240 6 = 40 s= √ ∑(x−x ̄)^2 n− 1 s ...

6.3. Standard Deviation of a Data Set http://www.ck12.org Guided Practice Calculate the standard deviation of the following numb ...

http://www.ck12.org Chapter 6. Normal Distribution Curves σ^2 = 9 + 4 + 0 + 1 + 1 + 9 + 1 + 4 + 1 + 16 10 = 46 10 = 4. 6 σ= √ 4. ...

6.3. Standard Deviation of a Data Set http://www.ck12.org TABLE6.21: Data(x) Mean(x ̄) Data−Mean(x− x ̄) Square of Data − Mean(x ...

http://www.ck12.org Chapter 6. Normal Distribution Curves In the United States, cola can normally be bought in 8 oz cans. A sur ...

6.4. Applications of Variance and Standard Deviation http://www.ck12.org 6.4 Applications of Variance and Standard De- viation H ...

http://www.ck12.org Chapter 6. Normal Distribution Curves Example A Use technology to determine the mean and standard deviation ...

6.4. Applications of Variance and Standard Deviation http://www.ck12.org the sum of the squared variations. You could also use t ...

http://www.ck12.org Chapter 6. Normal Distribution Curves Example C Use technology to verify that the answer in Example B is cor ...

6.4. Applications of Variance and Standard Deviation http://www.ck12.org 74 68 79 84 92 82 55 77 91 100 84 80 99 74 59 88 89 53 ...

http://www.ck12.org Chapter 6. Normal Distribution Curves You can see that the mean of the test scores was approximately 80.9, w ...

6.4. Applications of Variance and Standard Deviation http://www.ck12.org b. 9.15 c. 66.96 d. 83.7 What is the population standa ...

http://www.ck12.org Chapter 6. Normal Distribution Curves 6.5 Empirical Rule Here you’ll learn how to represent the standard dev ...

6.5. Empirical Rule http://www.ck12.org of the mean. This is referred to as theEmpirical Rule, which is also known as the 68-95- ...

http://www.ck12.org Chapter 6. Normal Distribution Curves a) Between 67 g and 73 g lies 68% of the data. If 1,250 bags of chips ...

6.5. Empirical Rule http://www.ck12.org 20 15 21 24 7 19 10 17 15 22 31 19 20 21 21 9 12 26 24 28 19 16 24 11 17 31 25 13 16 18 ...

http://www.ck12.org Chapter 6. Normal Distribution Curves What percentage of the data in a normal distribution is between 2 sta ...