StatQuiz 2
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Tutorial 4: Data Exploration
In this tutorial we shall:
Carry out preliminary explorations of some data
Use a calculator in statistics mode to obtain some summary
statistics.
Reminder from Lectures:
Statistical data analysis is about asking and answering
FAMILY NAME:
_
FIRST NAME:
_
STUDENT NUMBER: _
STAT170  INTRODUCTORY STATISTICS
SAMPLE CLASS TEST
Time allowed: 40 minutes
Using a pencil, please write your name and student number in the appropriate space on the
answer sheet, starting from the lefthand
Tutorial 2: Statistical Studies
In this tutorial we shall:
Discuss how to complete Online quizzes.
Consider the design of studies.
Discuss sampling from populations.
Classify some data.
Consider sampling bias.
Rules for rounding numbers and answering onli
Graphing data:
Categorical bar charts, pie charts
Numerical histograms, stem & leaf plots, box plots, scatter plots
MEDIAN: value which divides the sample in half.
LOWER QUARTILE (LQ): separates the lower 25% of values from rest of data
UPPER QUARTILE (
PRACTICE EXAM 2012
Please note that this practice exam is provided as a guide only.
Information presented in this practice exam and its solutions may differ
slightly from information presented in your current text book.
Time Allowed:
3 hours plus 10 minut
PRACTICE EXAM 2012
Please note that this practice exam is provided as a guide only.
Information presented in this practice exam and its solutions may differ
slightly from information presented in your current text book.
Time Allowed:
3 hours plus 10 minut
Tutorial 11: Regression
In this tutorial we shall:
Discuss scatter plots showing relations between two continuous variables.
Collect a sample of bivariate data.
Use regression analysis to investigate the relation between two continuous variables.
Regressi
Tutorial 12: Regression
In this tutorial we shall:
Use Minitab outputs to assess the relation between two numerical variables.
Use the Goodnessoffit (R2) to measure the proportion of variation in the dependent
variable that is explained by the independe
Tutorial 9: Hypothesis Testing:
One Sample Hypothesis Tests for a Mean
Paired tTests and Two Sample tTests
In this tutorial we shall:
In this tutorial we shall:
conduct a hypothesis test for a population mean
collect data and conduct a two sample tte
Worksheet 3
For this exercise you will need to read A Guide to Report Writing which is provided on
iLearn (in the Other Course Resources section). This guide gives you the basic outline
for the format of a statistical report. For the purposes of STAT170,
Tutorial 13: Categorical Data Analysis
In this tutorial we shall:
Conduct a 2 goodness of fit test
Conduct a 2 test of independence
Recall the exercise from Tutorial 3:
A sample of 320 STAT170 students was randomly selected. Each student was asked to
choo
Week 3 Practical Graphical Summaries
Introduction
These sessions are designed to give you practical experience in handling data in an appropriate
manner. You will be using data sets from a wide range of applications. You will find that some
data sets are
Week 4 Practical Numerical Summaries
Introduction
The previous practicals focused on graphical summaries. This practical is designed to give you
experience in using Minitab to obtain numerical summaries.
In this session we shall cover the following topics
Week 13 Practical Categorical Data Analysis
Introduction
The topics to be covered in this session are:
the 2 goodnessoffit test
the 2 test of independence
The files required are:
Students_13.mtw and Pulse_13.mtw.
1. GoodnessofFit Test
Open an empty wo
Week 12 Practical Correlation and Regression
Introduction
The topics to be covered in this session are:
testing the least squares regression line
correlation
residuals
The files that you will need are Peru_13.mtw and Deaths_13.mtw.
1.
Testing a Linear Rel
Week 11 Practical Scatter Plots and Regression
Introduction
The topics to be covered in this session are:
graphing data
fitting a least squares regression line.
The files that you will need are Pulse_13.mtw, Storks_13.mtw and
Peru_13.mtw.
1. Measuring a L
Week 5 Practical  Manipulating Data and
the Normal Distribution
Completing practicals from this week
From this week onwards you will be completing (in your own time) the practical work from home
or by using one of the computers (that have Minitab already
Week 9 Practical Comparing Two Population Means
Introduction
The topics to be covered in this session are:
hypothesis testing, the twosample ttest
hypothesis testing, the paired ttest.
The files you will need are:
Pulse_13.mtw and StudRan_13.mtw
1. Dif
Week 6 Practical  Distribution of Sample Means and
Proportions
The Central Limit Theorem
Introduction
The topics covered in this session are:
distribution of means from normal populations
distribution of means from nonnormal populations
the Central Limi
Week 7 Practical  Confidence Intervals
Introduction
The topics covered in this session are:
effect of increasing the sample size on confidence intervals
confidence intervals for population means
confidence intervals for population proportions.
The files
Week 8 Practical Hypothesis Testing for Population
Means
One Sample Tests
Introduction
The topics covered in this session are:
hypothesis testing, ztest for a population mean
relationship between hypothesis tests and confidence intervals
hypothesis testi
Tutorial 5: The Normal Distribution
In this tutorial we shall:
Calculate probabilities from the normal distribution.
Remember from Lectures:
In lectures you were shown that, for a numerical variable which is known to be normally
distributed with the mean
Tutorial 10: Tests for proportions
In this tutorial we shall:
Conduct a hypothesis test for a population proportion.
Conduct a hypothesis test for comparing two population proportions.
Reminder from Lecture Week 9:
In lecture 9 we looked at hypothesis tes
Tutorial 6: The Central Limit Theorem
In this tutorial we shall:
Demonstrate the Central Limit Theorem for Sample Means.
Consider the Central Limit Theorem for Sample Proportions.
Reminder from Lectures:
In Lecture 5 we discussed the Central Limit Theorem
STAT170 Report Writing Example
Question
Is the mean daily room rate of fivestar Sydney hotels equal to $240?
A sample of 15 fivestar hotels in Sydney reported the following daily room rates:
270 240 340 290 190 270 180 220 260 230 240 220 200 260 250
St
Question 1 (8 marks)
A study in 2014 recorded information on a randomly selected sample of 25 schools
in very remote locations in Australia. Some of the variables recorded on each school
are listed below.
Variable Description
ID School ID
Location State:
FAMILY NAME:
_
GIVEN NAME:
_
STUDENT NUMBER:_
STAT170  INTRODUCTORY STATISTICS
Session 1 2015
CLASS TEST 1 solutions
Time allowed: 40 minutes
Using a pencil, please write your name and student number in the appropriate
space on the answer sheet, starting
FAMILY NAME:
_
GIVEN NAME:
_
STUDENT NUMBER:_
STAT170  INTRODUCTORY STATISTICS
Session 1 2015
CLASS TEST
Time allowed: 40 minutes
Using a pencil, please write your name and student number in the appropriate
space on the answer sheet, starting from the le