Make a short research\'s presentation: population under study, statistical unit,

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Exercise 2. Each student will select her/his own sample, in SPSS, according to remark no. 3. You must have, in the database, at least two continuous variables, and at least two qualitative variables (these can be also obtained from continuous variables - use Transform). Requirements:

a) Make a short research's presentation: population under study, statistical unit, the research's objective, the sample size, describe a few (the most important) variables.

b) Univariate analysis: tables, graphs, descriptive statistics.

b1) Analyze data for a qualitative variable: table of frequencies, bar chart, and mode. b2) Analyze data for a continuous quantitative variable (raw of data; scale): i) Graph: Histogram; ii) Central tendency: Mean, Median. Percentile: quartiles. Variation: standard deviation, variance, range. Shape of distribution: kurtosis and skewness.

SPSS: Analyze/Descriptive Statistics/Frequencies.

Specify, at each point (from b1, b2), what information bring the output statistics (i.e. interpret the results).

c) Choose a quantitative continuous variable X (related to the_investigation's objective): c1) compute and interpret the confidence interval for mean of X, standard error SE, margin of error E. Analyze/Descriptive Statistics/Explore; c2) compute the sample size

n to be observed, if the accuracy is imposed to be as following: the probability P=0.95, the error E=5% from the mean of variable X (in the sample).

d) Consider a qualitative variable with two categories (0/1).

d1) Compute and interpret the confidence interval for the proportion; d2) compute the sample size n to be observed, for a probability P=0.99 and a margin of error E=3%. e) Test a hypothesis concerning a mean. Analyze/ Compare means / One-

Sample T test

f) Test a hypothesis about a proportion. Analyze/Nonparametric Tests/Binomial g) Test a hypothesis concerning the differences of two means. Analyze/ Compare means/independent-Samples T test.

 

 

Attachments:

Related Questions

. Introgramming & Unix Fall 2018, CRN 44882, Oakland University Homework Assignment 6 - Using Arrays and Functions in C

DescriptionIn this final assignment, the students will demonstrate their ability to apply two ma

. The standard path finding involves finding the (shortest) path from an origin to a destination, typically on a map. This is an

Path finding involves finding a path from A to B. Typically we want the path to have certain properties,such as being the shortest or to avoid going t

. Develop a program to emulate a purchase transaction at a retail store. This program will have two classes, a LineItem class and a Transaction class. The LineItem class will represent an individual

Develop a program to emulate a purchase transaction at a retail store. Thisprogram will have two classes, a LineItem class and a Transaction class. Th

. SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 1 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of

. Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:

1 Project 2 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of