Questions
1)
2)
3)
4)
147 students took Exam 1.
30 questions were on the exam.
The lowest score earned on the exam was an 11 out of 30.
The mean score on the exam was a 22.98 out of 30. The median score was a 23.5 out
of 30. I think the median score is hi
Courtright Exam #2 (Book Outline)
CHAPTER 5 (PAPER-AND-PENCIL TESTS AND RATING SCALES)
Beginning Summary
- Measurement scales and paper-and-pencil instruments are heavily used in social sciences,
including comm. research
- Several advantages
o Efficient w
I do not believe that this data set represents a normal distribution because although the mean and
median are found at the fiftieth percentile of the data set and do represent the same number, the
mean is not the highest ranking number in the set which wo
FORMULAS:
- Degree of Error:
Total X = True X + Error X
- Variance / Reliability
Total Var. = True Var. + Error Var.
True Var. = Total Var. Error Var.
Reliability = _True Variance
Total Variance
Reliability = _Total Var. Error Var.
Total Var.
Reliability
Colton Braun
Professor Courtright
COMM 301 010
9 May 2012
On-line vs. Paperback; How they Compare in College
In the 14 years Ive been going to school, I cant remember even one time when I was
genuinely excited to read a textbook. That being said can you i
2/7/13
Construct: A construct is a special concept that we invented for some
scientific purpose. They dont exist in any material sense.
Examples of constructs: belief, attitude, sources of credibility,
Variable: a concept or construct to which values or n
Do you think these data form a normal distribution? In no more than a couple of sentences, what
part of the analysis prompted you to give that answer?
-I do not think that these data form a normal distribution because the box highlighted between 15
and 17
Directions for Installing JMP
1. Open your web browser to: https:/udeploy.udel.edu/
2. Select either Windows Software or Macintosh Software
3. Select Scientific and Research Software
4. Select JMP
5. Read the page and then select Obtain JMP 10
6. Log in u
COMM 301 EXAM 3 BOOK NOTES
Chapter 10
A sample versus the population
Set of requirements:
- Independent
- Normally distributed
- Sufficiently Large
- Random sample of observations
Observations are independent
Ensures measurement obtained from one observat
Jan 3rd
What does scientific
knowledge look like?
Method of science
4 characteristics that define a scientific method
Public- thus replicable (the work goes on in labs
in private but the knowledge it generates must be
made public) done is some kind of jou
6) The first two things I noticed about the mosaic plot were that both emotions Angry and
Sad contained the larger amounts of their representative colors in their columns compared to
the other two emotions of Happy and Loving. I can therefore conclude tha
OptionalExerciseAfterAssignment1
ThisoptionalexerciseisdesignedtogiveyoualittlefamiliaritywithJMPDataTables
andsomeofthethingsyoucandowiththem.Wearegoingtorecreateallofthecolumns
ofdataonpage151.WewilldothisthroughJMPformulas.Aformulatakesthevalues
ofan
Chapter11JMPAssignment1
Inthisassignment,youaregoingtorecreatethedataandstatisticsfoundinTables11.1
(p.209)and11.2(p.225)inyourtextbook.Also,withabitofluck,youwillalsoseesome
connectionsthatyoumostlikelywouldmissfromjustreadingthebook.Note:because
this