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Statistics

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Statistics
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נסה את זה בחינם!

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טקסט Storyboard

  • Hey, What's wrong? Why are you crying?
  • it's because I wasn't able to do well in the review test and I'm worried because tomorrow is the real exam and I can't do well.
  • Hmmmm, maybe i can help you with that. Tell me, what topic do you not understand?
  • It's Identifying Appropriate Test Statistics Involving Population Mean. 
  • Really? You'll help me?
  • Eh? An easy one. Ok for the first question, do you know what is Z-Test?
  • Yes, you got it right!
  • Is it a statistical test used to determine whether two population means are different when the variances are known and the sample size is large?
  • Hmmmm, wait let me guess.
  • Then, how about the T-test? 
  • Oh, you got it right again! Hmmm, you said you struggled that much in that topic but it doesn't look like you're struggling too much, you're actually capable.
  • I know that one, it is used when the population variance or standard deviation are not known.
  • For the last question, What is Central Limit Theorem?
  • It states that if you have a population with mean and standard deviation and take sufficiently large random samples from population with replacement, then the distribution of the sample means will be approximately normally distributed.
  • Oh so that is Central Limit Theorem. hmmm from now on, I'll remember it.
  • Hmmm, I don't know that, what is that?
  • So that's it, I hope I helped you with that.
  • I wish you luck, and I also hope you don't forget what you've learned today. Bye! See ya tomorrow!
  • You've been a great help, Thank you! I can answer the exam tomorrow.
  • Yes of course, I guess I'll just review it at home or before the test. Bye! See ya!
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