SOCI 3311 Blog

Yes.

This statement is TRUE.

Actually Dr. Guy I made a mistake, I meant assignment 4 1-5?!

Assignment 4 - Problem 1-5 is also TRUE.

It should be 64.00 ± 2.58

Thank you so much
Anty.

Would you copy the specific Quiz Question into the BLOG so I know which problem you are talking about.

Also, please notice that on the homework, there are no problems dealing with combinations or permutations. Our primary interest in probability is treating theoretical distributions (z, t, F, etc) as probability distributions.

There are no problems on any of the quizzes dealing with combinations or permutations. Likewise, there are none on the final.

Thanks so much!!

One less thing to worry about! :)

Please remember. NOT ALL answers are in the BLOGS. You MUST also read the UNITS (CHAPTERS).

Please come by my office Wednesday between 3pm and 5pm. If that time does not work for you, please message me and we will set up a time when you can meet me in my office.

You can also use SPSS in any U of M lab.

Ok I will be at your office wednesday thanks so much!

ABOVE is the same as TO THE RIGHT of a given z score.

BELOW is the same as TO THE LEFT of a given z score.

Looks good!!

Assignment 2:

2-4 - The VARIANCE is not measured in the same units as the mean.

2-9 - Please see BLOG entry dated September 21, 2009

2-10 - Please see BLOG entry dated February 3, 2010

For 6-4, you should enter 1.45 as one of the two z scores. Theoretically, the second z score is - ∞. However, we cannot enter - ∞. Instead we will substitute any value smaller than -4 (as virtually 100% of the area lies between -4 and +4). Hence, you can use -5 or -10 or -100 (your choice). Now your two z scores are -10 (for example as a substitution for - ∞ and 1.45. Do the same for 6-9.

For problems 6-5 and 6-10, substitute +5 or +10 or +100 for + ∞.

We are looking for 4 digits of accuracy (i.e. 4 digits to the right of the decimal. Regardless of your substitution (i.e. +5, +10, etc), the first 4 digits to the right of the decimal will be the same.

NOTE: This explanation was posted in the BLOG on January 28, 2010 as well.

Please see BLOG entry dated January 28, 2010 for BOTH ANSWERS.

Thanks so much!

Are the symbols supposed to be the O and S looking ones? for 2-2 and 2-3?

yes

ALWAYS use two-tails. For the sake of simplicity, I believe I have made all of the problems two-tailed tests.

Ok thanks!

Generally speaking, unless specified as a population, we assume a sample as population is virtually impossible to obtain.

In this case, I don't think there was an answer that would even work for population variance.

It does not copy & paste in Windows either. You just need to retype it into the journal.

5-1 and 5-2 are both in Unit 2, somewhere around page 18 and up.

for 5-7

Assume a data distribution has values ranging between 5 and 50. If the lower limit of the first class interval is 1 and an interval width of 5 is used, _____ class intervals are needed to create a frequency distribution.

Class Intervals Needed:

1 - 5
6 - 10
11 - 15
16 - 20
21 - 25
26 - 30
31 - 35
36 - 40
41 - 45
46 - 50

10 class intervals are needed.

Thanks, Britta :)

Problem 6 requires a reading and understanding of UNIT 2 -- specifically pages 6 - 24.

Problem 9 requires a reading and understanding of UNIT 3.

Problem 6-1 is partially ANSWERED in a BLOG entry dated JANAURY 17, 2009.

Problem 6-3 is ANSWERED in a BLOG entry dated JANUARY 19 2009.

Problem 1-9 is partially ANSWERED in a BLOG entry dated JANUARY 27, 2010.

No. You can use any name you like.

Thanks.

Yes.. both are continuous.

The level of measurement with an absolute zero is the RATIO level of measurement. Please see Unit 1 - page 23.