Statistics 252 Homework # 1 Winter 2016
STAT 252 Homework 1 (70 Marks) Due Thursday, February 4 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not re
Statistics 252 Homework # 1 Winter 2015
STAT 252 Homework 1 (70 Marks) Due Wednesday, February 4 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not r
Statistics 252 Homework # 2 Fall 2016
STAT 252 Homework 2 (70 Marks) Due Friday, October 14 by 10pm
For questions that state SHOW ALL STEPS, write all the steps of a hypothesis test or confidence interval as
indicated below. For other questions that say d
Statistics 252 Homework # 1 Winter 2017
STAT 252 Homework 1 (72 Marks) Due Wednesday, February 8 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not r
LAB ASSIGNMENT 1
DATA TRANSFORMATIONS, T-TOOLS AND ALTERNATIVES
As long as the data are approximately normal, the t-tools can be used to make approximate but valid and
reliable inferences from the data. However, if the assumption of normality is seriously
Statistics 252 Homework # 1 Summer 2015 Paul Cartledge
STAT 252 Homework 1 (60 marks) Due Monday, July 13 by 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) w
Stat 252 Homework # 4 Winter 2014
STAT 252 Homework 4 (65 marks) Due Wednesday, April 9 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) will not receive an
Statistics 252 Homework # 2 Summer 2015 Paul Cartledge
STAT 252 Homework 2 (39 marks) Due Monday, July 20 by 10 pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated)
ASSIGNMENT 1
USING THE T-TOOLS
In this assignment you will apply descriptive and graphical tools in SPSS to examine data about brain sizes
for two groups of mammals. You will also learn how to transform the original measurements when the
distribution assu
Statistics 252 Homework # 1 Solutions Winter 2015
STAT 252 Homework 1 (70 Marks) Due Wednesday, February 4 at 10pm
1. (4 marks) Suppose m c
s
n
.
a) (2 marks) Solve for c (as a function of m, n and s).
m n cs
c
m n
s
b) (2 marks) Solve for n (as a functi
SOLUTIONS TO THE ASSIGNMENT 2
Question 1
(a)
The descriptive statistics for the six treatment groups are displayed below:
Descriptives
STRENGTH
TYPE
1
2
3
4
5
6
Mean
95% Confidence
Interval for Mean
5% Trimmed Mean
Median
Variance
Std. Deviation
Minimum
M
Statistics 252 Homework #2 Solutions Summer 2011
STAT 252 Homework 2 Solutions (30 marks) Due Monday, July 18 at 10 pm
1. (3 marks) A psychology student, interested in the migratory eating habits of human
organisms during the lunch hour upon the universit
Stat252
Stat 252 Introduction
WhatisStatistics?
What is Statistics?
Statistics is the science of collecting
isthescienceofcollecting,
organizing andinterpreting data.
StatisticalInference:
Todrawconclusionsaboutapopulation,
characterizedbyparameters,based
Statistics 252 Homework # 2 Solutions Winter 2015
STAT 252 Homework 2 (70 Marks) Due Wednesday, February 25 by 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated)
Statistics 252 Homework #1 Solutions Summer 2011
STAT 252 Homework 1 Solutions (65 marks) Due Monday, July 11 by 10pm
1. (4 marks) Suppose m = c
s
n
.
a) (2 marks) Solve for c (as a function of m, n and s).
m n = cs
c=
mn
s
b) (2 marks) Solve for n (as a
Statistics 252 Homework # 1 Summer 2016
STAT 252 Homework 1 (61 marks) Due Monday, July 11 by 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) will not receive
Stat 252 Homework # 3 Fall 2014
STAT 252 Homework 3 (38 marks) Due Wednesday, November 12 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) will not receive
Statistics 252 Homework # 2 Fall 2014
STAT 252 Homework 2 (55 marks) Due Wednesday, October 15 by 10 pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) will not re
SOLUTIONS TO ASSIGNMENT 1
Question 1
Data were collected on 96 species of mammals from zoo records and the literature. These mammals were
grouped on the basis of the observed average litter size. This is an observational study, the group status of
the mam
Stat 252 Homework # 1 Winter 2014
STAT 252 Homework 1 (50 Marks) Due Wednesday, February 5 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single numerical
answers (unless indicated) will not receive
ASSIGNMENT 2
ONE-WAY ANALYSIS OF VARIANCE
Analysis of variance is widely used in medical and biological sciences for testing hypotheses about
population means and estimating the differences between the means. When the variable of interest is
examined for
SAMPLE LAB EXAM 4 SOLUTIONS
Case Study 1 (15 marks): Use 252sampleexam4a.sav to answer questions 1 15.
Discrimination against the Handicapped: Do people with physical disabilities have a more difficult time obtaining
employment? One potential factor confr
STAT 252: LAB EXAM 3
Instructions
1.
2.
3.
4.
You are allowed to use a calculator and the Statistical Sleuth text. Attempt all
questions. Begin by downloading three data files labD1.sav, labD2.sav, and
labD3.sav from the stat252 directory on the ftp site.
Statistics 252 Homework # 1 Fall 2014 Paul Cartledge
STAT 252 Homework 1 (60 marks) Due Wednesday, October 1 by 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated
Stat 252 Lab Exam 1 (Practice)
Case Study 1 (15 marks): Use 252sampleexam1a to answer the following questions.
In an industrial laboratory, under uniform conditions, batches of electrical insulating fluid were subjected to constant
voltages until the insu
Statistics 252 Homework # 2 Winter 2014
STAT 252 Homework 2 (55 marks) Due Wednesday, February 26 at 10pm
Show all your work and include appropriate justification to receive full credit for a solution. Single
numerical answers (unless indicated) will not
STAT 252: LAB EXAM 1
Instructions
1.
2.
3.
4.
You are allowed to use a calculator and the Statistical Sleuth text. Attempt all
questions. Begin by downloading three data files labA1.sav, labA2.sav, and labA3.sav
from the stat252 directory on the ftp site.
LAB ASSIGNMENT
LAB ASSIGNMENT 43
MULTIPLE LINEAR REGRESSION
In a multiple linear regression model, the mean of a response variable is a linear function of several
explanatory variables. The model and associated inferential tools are valid as long as the a
SOLUTIONS TO ASSIGNMENT 5
Question 1
(a)
The purpose of the study is to draw conclusions about the effects of gender and alcohol consumption on
blood alcohol content. The population of interest is the general human population. The subjects in the
study ar
SOLUTIONS TO ASSIGNMENT 4
Question 1
This is an observational study. The children in the study are pre-term babies who were admitted to a special-care
unit between January 1982 and March 1985. They were not selected at random from any specific population;
ASSIGNMENT 2
ONE-WAY ANALYSIS OF VARIANCE
Analysis of variance is widely used in medical and biological sciences for testing hypotheses about
population means and estimating the differences between the means. When the variable of interest is
examined for
ASSIGNMENT 4
MULTIPLE LINEAR REGRESSION
In this assignment, you will use multiple regression tools available in SPSS to examine the relationship
between extinction time of land-bird species and average number of nesting pairs. You will compare
different m
Math 115 Winter 2017, Written Assignment 2
Due by Wednesday February 8, 5:00 pm
1. Given that f (x) = 2x2 8x + 9, 0 x 3.
(a) Find the average value of f .
(b) Find all c with fave = f (c).
2. Find the values of the following.
(a) sin(2 cos1 ( 15 )
(b) cos