1 / 4

Statistics

Saturday, 24 May 2014. Statistics. a) Be able to find the averages called: MODE, MEDIAN & MEAN b) Be able to find the RANGE. Statistics. The MODE The most common number or item . The MODE of 2, 3, 4, 6, 3, 5, 3, 4, 7, 3 is 3.

sylvia
Download Presentation

Statistics

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. Saturday, 24 May 2014 Statistics a) Be able to find the averages called: MODE, MEDIAN & MEAN b) Be able to find the RANGE

  2. Statistics The MODE The most common number or item. The MODE of 2, 3, 4, 6, 3, 5, 3, 4, 7, 3 is3 The data has been put into a GROUPED frequency chart. 2 – 4 is the MODAL group

  3. The MEDIAN The middle number • To find the median of a) 2, 3, 3, 7, 8, 12 , 8 , 3 , 6 • b) 2, 3, 3, 7, 8, 12 , 8 , 3 , 6 , 10 • Put the numbers into rank order • 2, 3, 3, 3, 6, 7, 8, 8, 12 • Find the centre number(s) • 2, 3, 3, 3, 6, 7, 8, 8, 10, 12 • If there are two numbers at the centre • 2, 3, 3, 3, 6, 7, 8, 8, 10, 12 add these together and divide by 2 • (6 + 7) ÷ 2 = 13 ÷ 2 = 6.5

  4. The MEAN Add all the numbers together and then divide by the number of numbers. To find the mean of 3, 3, 6, 8, 1, 4, and 9 3 + 3 + 6 + 8 + 1 + 4 + 9 = 34 34 ÷ 7 = 4.86 The RANGE This is the difference between the smallest and largest numbers. The RANGE of 3, 3, 6, 8, 1, 4, and 9 is 9 – 1 = 8 There are 7 numbers

More Related