Pages

Two Major Areas of Statistics

There are several tools in statistics like graphs, correlation, analysis of variance, and various mean separation tests. Their specific usage depends upon the nature of the study. Yet, whatever tool or method is used, they all belong to any of the two broad areas of statistics.

The first area is what we call as Descriptive Statistics. It comprises those methods concerned with collecting and describing a set of numerical data so as to yield meaningful inference. This statistics provides information only about the collected data and in no way draws inferences. This can either be graphical or computational like construction of tables, charts, graphs, and other relevant computations. It may also include the study of relationships between and among variables.

The second area of statistics is the Inferential Statistics. If descriptive statistics is concerned only on presentation of data, inferential statistics comprises those methods concerned with the analysis of a subset of data leading to predictions or inferences about the entire set of data. It involves all the techniques by which decisions about a statistical population are made based only on a sample having been observed or a judgment having been obtained. It is concerned more with generalizing information or making inference about the population. Considered as the central function of modern statistics, inferential statistics is concerned with two types of problems: (a) estimation of population parameters, and (b) tests of hypothesis.

Example:

Height of Crops as Affected by Different Nitrogen Level (in inches)

Level 1:            3.45     2.86     3.12     2.95     3.05                 Mean – 3.086
Level 2:            4.66     5.54     4.75     5.33     5.24                 Mean – 5.104
Level 3:            5.32     7.65     6.87     7.41     7.36                 Mean – 6.922

Descriptive Statistics:
  • The shortest plant has a height of 2.86 inches while the tallest is 7.65 inches.
  • Plants in Level 1 have a mean height of 3.086 inches, while Levels 2 and 3 produce mean heights of 5.104 and 6.922 inches, respectively.
  • Level 1 nitrogen produced the shortest plants, while level 3 the tallest.
  • Plants in the experiment have a grand mean of 5.037 inches.
  • Chart of Mean Height (in inches)
 
Inferential Statistics:
  • Based on the results, the height of plants increases as the level of nitrogen application increases.
  • Plant height in Level 1 is statistically different from Level 2 and 3. However, difference in Levels 2 and 3 is not significantly different from each other.
  • There is a strong correlation between the level of nitrogen application and plant height.

39 comments:

  1. This is really great content. It is not very often that I can say that I am really impressed, but this is quality. Thanks for sharing.

    ReplyDelete
  2. I read this post and After reading your post i have a better understanding.. Such a interesting content.. ThanksCustom Term Paper

    ReplyDelete
  3. You should be able to upgrade managing in upcoming. You need also for you to move from company one other. The company should have dedicated server services and VPS host. Recharge your tatasky with mytatasky coupons in shopozo.

    ReplyDelete
  4. Transfer your design onto the paper. Keep only the outline, and cut the inside organ of the design. Squeeze cutout what your want the tattoo pertaining to being on you body mehndi designs are at fashionladki.

    ReplyDelete
  5. However, the IUM contains a built in computer and WiFi capabilities. This presents truly infinite possibilities for the USB as well as you acquire one of first exclusive reviews of a robust before it hits the market check queries.

    ReplyDelete
  6. Should you not figure it out, take a look at the odds board. An auto has been handicapped by thousands individuals. Some of them are management. try this link

    ReplyDelete
  7. One among the most key in a golf swing is the grip. A bad grip commonly leads to many types of errant shots. check once

    ReplyDelete
  8. Additional equals about fifty more yards. They may be in the left rough, but they're fifty yards further down towards the opening. All good players learn first to draw the ball.forum fill

    ReplyDelete
  9. You may need to also be safe and state that any testosterone clinic that you do business with is positioned in the united states. visit this

    ReplyDelete
  10. But we gotta start somewhere. Maybe for you it's just a "be kind to Romo moment" eventually followed with "be kind to Romo day," or part connected with a day with regards to the how well you can eliminate your temper, or change your point of view. click here

    ReplyDelete
  11. Since they method to bet the horses usually master money management, not handicapping.visit this url

    ReplyDelete
  12. A second popular grip is in order to the "overlap" grip. Which probably the most commonly used grip throughout professional the sport of golf. visit this link

    ReplyDelete
  13. Drew Bledsoe has risen from the dead explaining having a very solid season throwing the football.click here for forum

    ReplyDelete
  14. In your second round on the 2010 NFL Draft, the Philadelphia Eagles again chose a defensive player, selecting safety Nate Allen from the University of South Oregon. check bio

    ReplyDelete
  15. Many video games, however, relies on a variety of platforms. Some xbox video games are better play on the computer, while others are better on a console.
    try here

    ReplyDelete
  16. Some casinos will allow players to withdraw their deposits before they have even started working from the wager things. visit this blog

    ReplyDelete
  17. The Philadelphia Eagles have shown a past desire to trade down or right out the first round, preferring spend for experienced and known quantities the large sums that first-round picks pick-up. The Eagles have the Little.click to check

    ReplyDelete
  18. Earn great vacations. Usborne Books' Office at home is great! When you decide to become an Usborne Books Consultant all of it . At shopozo get hercules roadeo offers and deals.

    ReplyDelete
  19. The 3.3-inch screen displays a bright and vivid bodily appearance. Its 5mp camera captures 720p video, and playback of videos is great.
    click this link

    ReplyDelete
  20. The 3.3-inch screen displays a bright and vivid emergence. Its 5mp camera captures 720p video, and playback of videos excellent.
    click to get

    ReplyDelete
  21. A second popular grip is known as the "overlap" grip. Which probably essentially the most commonly used grip throughout professional the sport of golf. try this link

    ReplyDelete
  22. Evident than when you wrote when it comes to a 1 asking me if the aborted babies was to be able to be so small and helpless in heaven.check it here

    ReplyDelete
  23. That is called murder. And that, in fact, precisely what abortion is probably. Just because the child is inyou, doesn't mean itis you can. Therefore, you do not have the right to hurt the following. visit this

    ReplyDelete
  24. Christians declare themselves children of the Almighty and can not be stolen away by those would you choose thoughts for them.check it here

    ReplyDelete
  25. The story is told from the particular of look at Otilia. She is resourceful, attractive and bright. Gabita is almost like a little child. visit here

    ReplyDelete
  26. Possess have done this, therefore then hook it up to the opposite media device you need it to be connected to. On-line loan application soon follows after have got done it. I download arf player from arfplayer.com you can download it there.

    ReplyDelete

  27. I can't sleep until i visit your blog. it become my habbit i know
    this confession seems crazy one but it's true
    see more..

    ReplyDelete
  28. It is literally helpful. Keep doing work on that sort of posts.
    See More..

    ReplyDelete
  29. Thanks for sharing this amazing post.
    see more

    ReplyDelete
  30. its nice to be here.keep posting such content
    click here

    ReplyDelete
  31. Thanks a lot for sharing that article with your audience.
    thanks! see here

    ReplyDelete
  32. I wanted to thank you for this great read! keep positing here...
    click here

    ReplyDelete
  33. it is nice content keep improve thanks for this
    elvin

    ReplyDelete
  34. Need a small business loan to get the working capital you need? Get quick & easy access to the funding you need,financing you need to help your business grow Quickly.Email: lendingcashhelpdesk@gmail.com
    ===========================================================
    هل تحتاج إلى قرض تجاري صغير للحصول على رأس المال العامل الذي تحتاجه؟ احصل على وصول سريع وسهل إلى التمويل الذي تحتاجه ، والتمويل الذي تحتاجه لمساعدة عملك على النمو بسرعة.
    Email: lendingcashhelpdesk@gmail.com

    ReplyDelete
  35. Nice article. Thanks for sharing.
    Artificial Intelligence Courses Online
    Artificial Intelligence Training in Hyderabad
    Artificial Intelligence Online Training Institute
    Artificial Intelligence Training
    Artificial Intelligence Training in Ameerpet
    Artificial Intelligence Course in Hyderabad
    Artificial Intelligence Online Training
    AI Training In Hyderabad
    AI Online Training

    ReplyDelete