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An Introduction to Statistics

Homework for Statistics Lesson 1

  1. What is the difference between statistics and statistic?

     

     

  2. What is the difference between descriptive and inferential statistics?

     

     

  3. Would you trust a 1998 poll to be accurate when saying that Clinton needs to resign if you find out that the poll is collected by people calling in response to a newspaper article? Why or why not?

     

     

  4. Complete the following comparison: Parameter is to ?................?, as statistic is to ?..............?.

     

     

  5. What are the two catagories of data starting with the letter q?

     

     

  6. If numeric data is not discrete, then it must be ?.................?.

     

     

  7. Arrange in order from highest to lowest the four levels of measurement.

     

     

  8. If your teacher's portfolio dropped 16% in value, what percent increase (from the resulting, new value) would be required to return it back to its original value?

     

     
    The first edition of a textbook contained 600 exercises. For the revised edition, the author removed 50 of the original exercises and added 350 new exercises. Complete each of the following statements.

  9. There are ?..............? exercises in the revised ed.

     

     

  10. There are ?..............? more exercises in the revised ed. than the 1st ed.

     

     

  11. There are ?..............?% more exercises in the revised ed. than the 1st ed.

     

     

  12. ?..............?% of the exercises are new.

     

     

  13. Assume 25% of the deer population is infected with TB. Suppose the total population is reduced by 10% by recurring annual methods. If the initial population was 100,000, how many infected deer are left? (Assume that the reduction methods operate independantly of infection.)

     

     

  14. In two words, describe the difference between precision and accuracy.

     

     

  15. If 0°C = 32°F and 100°C = 212°F, find the temperature which is represented by the same number on both scales.

     

  16. ?............? is something you are born with, whereas ?........? is something you should get a ?............? for.

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