1 / 17

. . . PENNIES for the AGES . . .

. . . PENNIES for the AGES. Push the “Sample More Data” button on the screen and read the average age of a sample of 9 pennies taken from the jar. Note the horizontal and vertical scales on the grid here and then record that (rounded) average age using a properly scaled X.

carlyn
Download Presentation

. . . PENNIES for the AGES . . .

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. . . . PENNIES for theAGES. . . • Push the “Sample More Data” button on the screen and read the average age of a sample of 9 pennies taken from the jar. • Note the horizontal and vertical scales on the grid here and then record that (rounded) average age using a properly scaled X. MAT 312

  2. Suppose the Kick-a-Poo Milling Company made this claim about their Raisin Bran: In our 20-ounce box of raisin bran, we average 143 raisins per box. Now suppose you just opened a 20-ounce box of Kick-a-Poo Raisin Bran and accurately counted 174 raisins. Would this number of raisins be a rare occurrence? Would it seem unusual to you? Write a sentence to explain your response. MAT 312

  3. Prob & Stat (MAT 312)Dr. Day Tuesday February 18, 2014 • Grab 9 Pennies at Random then Calculateand Plot Their Average Age • Return Quiz #2 and Assignment #3 • Measures of Spread • Deviations from Center • Mean Absolute Deviation • Standard Deviation and Variance • Characteristics of a Normal Distribution • Mean and Standard Deviation • Empirical Rule • Putting it all Together: Characteristics of 1-Variable Data • Location, Spread, Shape • Quiz #3 and Test #1 Discussion MAT 312

  4. Which school had the better test scores? Scores from a common test given to 10 students at each of two schools. MAT 312

  5. MAT 312

  6. MAT 312

  7. MAT 312

  8. Normal Distribution: Empirical Rule MAT 312

  9. MAT 312

  10. MAT 312

  11. MAT 312

  12. MAT 312

  13. Assignments • Return Quiz #2 and Assignment #3 with Comments • Quiz #3 (Test #1 prep) today! • Test #1: Thursday, Feb 20: 1-Variable Data Analysis (Chs 1-3) • All material through today’s class • Website Resources • Two parts to the test • Multiple Choice • Open Response MAT 312

  14. Initial Steps: 1-Variable Data Analysis • Clustersare isolated groups of points. • Gaps are large spaces between data points or between clusters of data points. • Outliers are data values substantially larger or smaller than any other data points. • The maximum value of a data set is the largest value in the set. It is also called the upper extreme. • The minimum value of a data set is the smallest value in the set. It is also called the lower extreme. • The range of a data set is the difference between the maximum and minimum values of a data set. • The mode of a data set is the value that occurs most often in the data set. A data set can have more than one mode, and if no data value occurs more often than any other, there is no mode. MAT 312

  15. Representing Data MAT 312

  16. MAT 312

  17. MAT 312

More Related