Statistics - page 4

Anyone else taking statistics this semester? Classes started today and I'm already feeling overwhelmed!... Read More

  1. by   smattles1of2
    Whew...we're doing probability stuff now. It's kind of confusing, but I finished 2 homework assignments and it's starting to sink in.
  2. by   Plagueis
    Well, I just had my first test, and I got a 100. It was about the differences between inferential and descriptive statistics, knowing how to construct frequency distributions (calculating relative frequencies, midpoints), and making ogive and frequency polygon graphs. This wasn't too bad, but I see the next chapter is about central tendency measures and the standard deviation and the variance.
  3. by   smattles1of2
    Oh that stuff is easy! Standard deviation, etc. If you are allowed to use your calculators, they do all the work!
  4. by   JaxiaKiley
    Yeah, we just had a test on standard deviation. It was multiple choice. For one question, I got 1.549 on the calculator. The answer choices were 1.5 or 1.6. Which one is right?
  5. by   Plagueis
    Quote from JaxiaKiley
    Yeah, we just had a test on standard deviation. It was multiple choice. For one question, I got 1.549 on the calculator. The answer choices were 1.5 or 1.6. Which one is right?
    I would think the answer is 1.5, since the answer choices round off to one decimal place. If you got 1.559 on your calculator, I think that would be 1.6.
  6. by   JaxiaKiley
    Grr. Then I got that one wrong. I put 1.6 since the 9 would round the 4 up to a 5, which would round the 5 up to a 6. I couldn't remember a rule about how far back to go.
  7. by   AggieQT
    yay! I got a 97 on my first test... just one simple error! I just might make an "A"!!!
  8. by   JaxiaKiley
    LOL
    I wound up with a 97 on my first test, too! I'm not sure which question I got wrong, so I STILL don't know the right answer to my question. Heh

    Congrats on your 97!!
  9. by   akspudus
    Watch out for probability. I had well over 100% (test scores and extra credit) until I took the exam for probability. Ouch. Not in the triple digits anymore.

    akspudus
    Miami Dade College
  10. by   smattles1of2
    We just had our test on probability tonight. There were a few questions I wasn't sure about, but overall it wasn't bad. The teacher said she'll post grades tonight, so i'm waiting!
  11. by   JaxiaKiley
    Good luck! I take the probibility test next week. All these formulas! Ahh!
  12. by   smattles1of2
    Well, I got a 90. Blah. There were a few questions that were weird that I probably got wrong. But I turned in my homework, so that adds on 10% points, so I really got a 100! Yay!
  13. by   JaxiaKiley
    Do your teachers grade your homework just to see if it is finished, or do they check to see if you got the answers right? My teacher takes off if you got the answer wrong. I've never had a math class like that, and it really bites big toes!

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