MTH 125
Lab 1 Sampling Methods
Name _
Stratified Random Sampling
You will use our class data. (Since this is an online course, your class data can be the
data you collect from friends, family, coworke
1. If we take many simple random samples from the same population, we expect the
same values of the statistic for each sample.
A. True
B. False
2. Taking a larger
Name: TA: Recitation Time:
Lab Activity #2: Experilnents
Today, you will conduct an experiment as a class and then critique this experiment. You will also attempt to answer some
questions about
Stat 135 Spring 2013 Practice Midterm Exam #2 Solutions
Instructions: On questions 11-14, you MUST show your work and explain to receive full
credit. There is no need to show your work on questions #
Stat 1350
Exam 2 Review
Spring 2013
1. At a particular gas station, there are three grades of gas (no diesel). The proportions of people
who buy regular unleaded, extra unleaded and premium unleaded a
Homework Assignment #2
Chapters 3 and 4
Spring 2017, STAT 1350
1. The telephone company says (with certainty) that 62% of all residential phone numbers in
Los Angeles are unlisted. A telephone survey
Stat 135 Spring 2012
Midterm Exam #1 (200 points)
Name_
Practice Version Solutions
TA _
Instructions: On questions 13-17, you MUST show your work and explain to receive full credit.
There is no need t
Practice Problems for Midterm Exam #2
STAT 1350, Spring 2015
These problems are meant to give you extra practice as you prepare for Midterm Exam #2. We
also want you to get a good sense of what the st
Practice Questions for Midterm Exam #1 (KEY)
STAT 1350, Spring 2015
True/False (circle the best answer)
1. The reliability of a measurment process can be seen by looking at the variability of a group
Stat 1350
T
Practice Final Exam
* True or False (no need to explain)
F 1) A test statistic is used to measure the difference between the observed sample data and
what is expected when the null hypothe
Stat 135
Practice Final Exam
Name
OUTLINE OF SOLUTIONS
* True or False (5 points each - no need to explain)
True 1) A test statistic is used to measure the difference between the observed sample data
Suggested Answers Practice Problems for Midterm Exam #2
STAT 1350, Spring 2015
Be sure to talk with us if you have questions about any of the following answers!
True/False (circle the best answer)
T
F
Reviewing for the Midterm
Where do data come from? (Chapter 1)
Individuals, variables, populations, samples, observations studies, surveys,
experiments, census
Samples, Good and Bad (Chapter 2)
Bi
Final Exam Review
Announcements
Please fill out SEIs!
HW 8 due Tuesday, December 9th
Final Exam Monday, December 15th from 6:00-7:45 pm
Locations posted on Carmen as well as details
You are allowed
Describing Relationships:
Scatterplots and Correlation
Announcements
HW 5 is due Wednesday, 10/29
Second midterm exam Monday, November 10th at 5:20 pm
If you cannot make this exam time, e-mail Dr.
More on Graphs of
Distributions
Announcements
HW 2 due right now!
Recall
We have two different types of variables: quantitative and qualitative
Like to graph the distributions of these variables
L
Probability Models
Announcements
HW 6 due Wednesday, November 5th
Midterm 2 on Monday, November 10th at 5:20 pm
E-mail Dr. Everson ([email protected]) by November 3rd if you have a
conflict with t
Basics of the Normal
Distribution
http:/www.mfolz.com/science-details/larges11.htm
Announcements
HW 3 due Wednesday, October 8th
First midterm exam Monday, October 20th at 5:20 pm
Remember to e-mai
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Ashley Peter
Recitation Leader: Hui Yang
Recitation Time: Tuesdays 6:30 PM
For my Data In Everyday Life Project, I chose the variable number
of hours your sleep per night. I chose this variable becaus
Namc: TA: Recitation Time:
Lab Activity #3: Reviewing Some oi the Big Ideas
STAT 1350, Spring 20l5
can».
It
Today. our focus is on reviewing some of the big ideas from Chapibrs 1-6 and Chapters 8. Y
Homework #2
STAT 1350
1. An article in the Chicago Tribune reported that, according to two large studies, overweight
individuals are significantly less likely to die prematurely if they undergo stomac
STAT 1350: Elementary Statistics
Spring, 2015
Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and
write.
-H.G. Wells
Instructors
Office Hours and Loc
Lab Activity #5: Exploring Data with Graphs
STAT 1350
Please read carefully through this handout and answer each question as completely as you can. This is
the first lab activity where you will need t
Practice Questions for Midterm Exam #1
STAT 1350, Spring 2015
These problems are meant to give you extra practice as you prepare for Midterm Exam #1. Note
the actual midterm will not contain this many
Extra Lecture 9 Slides
Comparing the mean and median:
For distributions skewed to the left:
mean < median
For distributions skewed to the right:
median < mean
For symmetric distributions:
mean =median
More on Confidence
Intervals
Announcements
HW 7 due Tuesday, November 25th
Final Exam is Monday, December 15th, at 6 p.m
If you have a conflict with that time, you must let Dr. Everson (
everson.50
More on Hypothesis Tests
Announcements
HW 8 is now due Tuesday, December 9th
Final Exam Monday, December 15th from 6:00-7:45 pm
Locations and details to be provided soon
Practice final exam posted
Extra Credit: Statistics Journal Assignment (10 points)
STAT 1350
Data is all around us, all the time. We live in a world where an understanding of statistics is
critical. This understanding can help
\ Area represents
\ percentile
7 2
Table B Percentiles of the normal distributions
Standard Percentile Standard Percentile Standard Percentile
Score (2) Score (2) Score (2)
MM 1-2 88.49 A
1.3
90.32
Homework Assignment #9
Confidence Intervals (Chapter 21)
Autumn 2017
1. The formula for a 95% confidence interval for a population proportion is given by
(1 )
The entire portion after the plus or m
Homework Assignment #8 (Chapter 18)
STAT 1350
1. The name for the pattern of values that a statistic takes when we sample repeatedly from the
same population is
A.
B.
C.
D.
E.
the bias of the statisti
Homework Assignment #6 (Chapter 13)
STAT 1350, Autumn 2017
1. Scores of adults aged 60 to 64 on a common IQ test are approximately Normally distributed
with mean 90 and standard deviation 15. What ran