1 / 7

Chapter 15

Chapter 15. Basic Statistics. §15 .1 thru 15.4 – Graphs. Bar graphs Example 1 p. 483 Problems 15.1 #18, 20, 22 (p. 483) Circle graphs Figure 15.2 p. 485 Example 1 p. 485 Problems 15.2 #12, 16 (p. 487) Line graphs Example 1 p. 488 Problems 15.3 #2, 4 (p. 489 – 490) Other graphs

fedora
Download Presentation

Chapter 15

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. Chapter 15 Basic Statistics

  2. §15.1 thru 15.4 – Graphs • Bar graphs • Example 1 p. 483 • Problems 15.1 #18, 20, 22 (p. 483) • Circle graphs • Figure 15.2 p. 485 • Example 1 p. 485 • Problems 15.2 #12, 16 (p. 487) • Line graphs • Example 1 p. 488 • Problems 15.3 #2, 4 (p. 489 – 490) • Other graphs • Examples 1 and 2 p. 491 • Problems 15.4 #5, 10 (p. 492)

  3. §15.5 thru 15.6 – Averages and Percentiles • Averages (Central Tendency) • Finding a number which describes a set of data • 3 general methods • Mean • Median • Mode

  4. §15.5 thru 15.6 – Averages and Percentiles • The Mean • The Mean of a set of numbers is found by adding all of the numbers together, and dividing by the amount of numbers. • The Median • The Median of an ordered set of numbers is the middle number (if there is no middle number, then the median is the mean of the two middle numbers). • The Mode • The Mode of a set of numbers is the most frequently occurring number. There may be more than one mode.

  5. §15.5 thru 15.6 – Averages and Percentiles • Examples: • 13 students took an exam, with the following scores. Find the mean, median, and mode score.98, 92, 90, 85, 85, 82, 77, 76, 75, 74, 74, 68, 52 • 10 people were surveyed for their salary. The following data was collected. Find the mean, median, and mode salary.35,000,000 59,50099,500 55,30088,300 30,20067,200 25,40060,000 22,000

  6. §15.5 thru 15.6 – Averages and Percentiles • Percentiles • Dividing a set into 100 parts and determining where a particular element falls • Example 4 p. 495

  7. §15.9 – Statistical Process Control • Mean control chart • Data plotted over time • Center line – target value • Control lines – show upper and lower tolerances • Complicated formula to determine control lines • Process is out of control if: • Any point is outside a control line • 9 or more consecutive points fall on one side of the control line • Figure 15.8 p. 506 • No problems assigned from this section (need Sx)

More Related