Grading Summary
These are the automatically computed results of your exam. Grades for essay questions, and
comments from your instructor, are in the "Details" section below.
Date and Time Started: 2/9/2016 2:59:17 PM
Time Spent:
31 min , 49 secs
Points Re
1) Would you suspect that the IDEA surveys sent to South students each term could be biased in the
responses received? Why or why not?
Yes. Because the survey answers could be biased off the student teacher relationship, if the student didnt feel they
lea
MAT2058 Discussion Questions
Week 1
Textbook: Triola, M. F. (2014). Elementary statistics technology update (12th ed.). Boston, MA:
Pearson Education.
An electronic version of this book is available in this classroom.
Instructions:
In the Course Home anno
Introduction
Literature Review
Social scientists have long been interested in the accuracy of eyewitness testimony. Several studies over
the past few decades have demonstrated that eyewitnesses are not always accurate (e.g., Buckhout,
1974; Bornstein & Zi
BEHAVIORAL PROJECT
1
Week 2 Assignment 1 Lab Project
Sarah J. Ledesma-Layton
Statistics for Behavioral Sciences Lab | PSY2008 S01
South University On-Line
BEHAVIORAL PROJECT
2
Interperting data introductory
There were 40 student participants from an intro
Example: ONE WAY ANALYSIS OF VARIANCE + POST HOC TESTS
This example uses data from a telephone survey of fast food consumers. The objective of the analysis is
to compare the number of times per month people in different age groups buy fast food. The depen
ASSIGNMENT 2: FINAL PROJECT
1
Week 2: Week 2 - W2 Assignment 2
Sarah J. Ledesma-Layton
Statistics for Behavioral Sciences Lab | PSY2008 S01
South University On-Line
ASSIGNMENT 2: FINAL PROJECT
2
Descriptive statistics
There were 72 members selected from a
Running head: Week 3 Final Project
1
Week 3 Final Project
Sarah J. Ledesma-Layton
Statistics for Behavioral Sciences | PSY2007 S01
South University On-Line
Running head: Week 3 Final Project
2
Analyzing Data Recall1
There were 72 members selected from an
Week 4 Assignment 1 Lab Project
Sarah J. Ledesma-Layton
Statistics for Behavioral Sciences Lab | PSY2008 S01
South University On-Line
Interpreting Data Introductory
Statistics for Behavioral Sciences Lab | PSY2008 S01
4/15/16
Interpreting Data Introductor
Questions with my response:
Week2
Thanks for jumping in and providing an argument in favor of the mean. I agree with your suggestion but
would add that the proper measure to use really depends upon the shape of the distribution of scores. It is
important
Post hoc tests are typically used to evaluate pairs of groups to see if they are statistically
significant from one another. Unlike planned comparisons, these evaluations are not planned in advance,
but rather represent a search "after the fact" to see wh
Discussion Assignment 2
You are part of a school and have to report the results of standardized test scores. Which measure of
central tendency would you use? Assume that you don't know how your students will perform; so
consider the general effects of out
Page 1
Q-7)
1)Heights of men on a baseball team have a bell-shaped distribution with a mean of 185 cm and
a standard deviation 8 cm. Using the empirical rule, what is the approximate percentage of the
men between the following values
a) _% of the men are
Problem 1
Suppose we want to take a poll of the attitudes of senior citizens in the State of Washington.
Using this example, describe in your own words how you would go about determining this
through:
a.
Drawing a random sample
b.
Drawing a systematic sam
Example
Find the area to the right of z = 1.88.
Solution
First draw the figure to represent the area.
-2
0
2
1.88
Second locate the z value to the left of 1.88
.0.8
.
.
.
1.8 0.9641 0.9649 .0.9699
0.9699
-2
0
1.88
2
(had a hard time shading in the differe
Using the data set below, please calculate the:
16
12
10
20
10
4
- Mean= 12
- Range=16
- Midrange=12
Solving for mean 16+12+10+20+10+4=72; 6/72=12
Solving for range 20-4=16
Solving for midrange 20+4=24; 2/24=12
Students are being surveyed about the weight
Suppose we want to estimate the average number of purchases in a given hour in a local
convenience store. Using this example, describe in your own words how you would go about
determining this average through:
a.
Drawing a random sample. In order to do a
Identify the properties that make flipping a coin 50 times and keeping track of heads a binomial
experiment. The coin flip will have 50 identical trails, with two possible outcomes. In each
trail the probability of flipping heads is 50/50 making each trai
How would standard (z) scores of -2.00 and +2.00 be interpreted using the Standard
Normal Distribution Table (A-2) in the text? We can find the difference between the two
areas.
Find the z-score for the standard normal distribution where: P(z < +a) = 0.89
A sampling distribution is a distribution of all sample statistics that describe a particular sample.
T-F, and why or why not? True. The sampling distribution of statistics such as sample
mean or sample proportion represent the sample and not the populati
9/19/16
Question 1)
An IQ test is designed so that the mean is 100 and the standard deviation is 9 for the population
of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics
students such that it can be said with 99% c