1 / 13

Objective 10

Objective 10 . Standard deviation By: Joey Slack . Next page:.

carsyn
Download Presentation

Objective 10

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. Objective 10 Standard deviation By: Joey Slack

  2. Next page:

  3. The # of absentees per day at Jackson elementary school is believed to be an approximately normal distribution, with a mean of 143 absentees/day and a standard deviation of 20 absentees per day use the table to determine the approximate probability the fewer than 123 absences will occur any given day!!! First go on your calculator and press 2nd-vars-2 That will bring you to the screen that says (Normal cdf) Next page:

  4. After you bring up the page then you need to know the mean (in this case it is 161). You also need to know the standard deviation (in this case it is 12). When you have this question is using the lowest possible number to the 149. When you enter this it should look like this: Lowest possible = -infinity e99 Highest possible = +infinity e99

  5. After you press enter it will take you to a number And this number is not always right on to the answer just pick the closest one.

  6. Part 2

  7. Start with stat then enter type into L1 the #s that the question has in this case it is 3,7,9,11,15.

  8. Then we have to go to the main page on your calculator then press stat then over to the right then –var stats. Then enter. Then u will need to put in list 1 by pressing 2nd 1.

  9. Find the standard deviation for the data given 3,7,9,11,15 Population standard deviation. Sample standard deviation. In this question we use the population standard deviation

  10. Part three 32 47 31 + 47 = 79 Left- 200 Right-252 Mean-200 S D -26 Now you need to type this in your calculator.

  11. To do this you need to get into (normalcdf) To do this press 2nd-vars-down-enter. Left- 200 Right-252 Mean-200 S D -26 You need to enter this in this order!! Hit enter and you will have your answer!! Take this and multiply it by the amount of kids (500)

  12. http://www.google.ca/imgres?imgurl=http://www.graco.unb.br/~alvares/estatistica/business.clayton.edu/arjomand/business/g32.gif&imgrefurl=http://www.graco.unb.br/~alvares/estatistica/business.clayton.edu/arjomand/business/l3.html&usg=__C66gJIyyciA7LxcxZeGxUsAzMMo=&h=400&w=540&sz=4&hl=en&start=0&zoom=1&tbnid=KcUIzHWAJo5zBM:&tbnh=142&tbnw=195&prev=/images%3Fq%3Dstandard%2Bdeviation%26hl%3Den%26biw%3D1440%26bih%3D799%26gbv%3D2%26tbs%3Disch:1&itbs=1&iact=hc&vpx=544&vpy=284&dur=1268&hovh=193&hovw=261&tx=160&ty=124&ei=GnvlTMqGMNnDcPPz4J8K&oei=GnvlTMqGMNnDcPPz4J8K&esq=1&page=1&ndsp=26&ved=1t:429,r:9,s:0http://www.google.ca/imgres?imgurl=http://www.graco.unb.br/~alvares/estatistica/business.clayton.edu/arjomand/business/g32.gif&imgrefurl=http://www.graco.unb.br/~alvares/estatistica/business.clayton.edu/arjomand/business/l3.html&usg=__C66gJIyyciA7LxcxZeGxUsAzMMo=&h=400&w=540&sz=4&hl=en&start=0&zoom=1&tbnid=KcUIzHWAJo5zBM:&tbnh=142&tbnw=195&prev=/images%3Fq%3Dstandard%2Bdeviation%26hl%3Den%26biw%3D1440%26bih%3D799%26gbv%3D2%26tbs%3Disch:1&itbs=1&iact=hc&vpx=544&vpy=284&dur=1268&hovh=193&hovw=261&tx=160&ty=124&ei=GnvlTMqGMNnDcPPz4J8K&oei=GnvlTMqGMNnDcPPz4J8K&esq=1&page=1&ndsp=26&ved=1t:429,r:9,s:0

More Related