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What we have done QDA II. 2014 - winter semester

Homework must be writen in doc MS Office format (possibly in txt, rtf or pdf) with your answers to the questions and brief interpretation of the results (select only adequate results from SPSS output).
Send it to the email jiri.safrATseznam.cz; in the subject, please write: QDA2, homework NO., YOUR NAME |

(assignment in process)

Data:

Find out using computation of Confidence intervals (95 %), whether there are (statistically significant) differences in Political orientation on Left-Right scale [

a) age groupings [

b) marital status [

Among which groups we can find differences (at

Use

Data:

(this homework is joined with homework no. ?? on testing of statistical hypotheses)

Calculate the 95 % confidence interval for the proportion of Christians, namely:

a) by hand via inserting into formulas - instructions can be found in the presentation

b) and also verify the result in SPSS using syntax routine for

You can also find it (the selected test) with further comments in

c) Bivariate research question: Are there differences (at 5% of statistical significance) in proportion of voters [

Note: G. Pryce [2002] syntax routine doesn't work in PSSP (yet) but you can use web calculators:

In 1991 in the Czech Republic, the EVS survey reports this participation rate, i.e. membership in:

1. Religious/ church organization 5.4%

2. Political parties/ movements 5.0%

3. Sport and entertainment organization 17.8%

4. Cultural, arts organizations 5.6%

EVS 1991 sample size was N = 2109.

Compare these results from 1991 with results from the ISSP 2007 survey, where membership - participation in organizations is represented by these variables:

Church or other religious organization [

Find out using computation of confidence intervals, whether and possibly at which organizations, the civic participation rate has changed in the Czech society during the last 16 years.

A hint: first for 2007 data compute descriptive tables (Frequencies), you even don't need to recode variable first (just sum corresponding categories counts). Second, compute confidential intervals to detect change, for which there are two strategies: 1. compute confidential intervals for 1991 as well as 2007 and then inspect whether they overlap; or 2. you can also compute confidence interval only for the difference (1991-2007) then you inspect wether it containes zero (if yes then we can't confirm the change).

For both strategies you can use SPSS syntax routine by G. Pryce [2002]

Note that this syntax routine doesn't work in PSSP (yet) but you can use web calculators:

1. Read obligatorily:

2. Tests for means: using T-test and simple One-way ANOVA (F-test) find out, whether there are (statistically significant at

a) between

a) among

In both cases use in addition to a statistical test graph with means of L/R orientation along the categories of the independent variables (gender, age) with 95% confidence intervals (ERRORBAR). Here it is the same problem-question as you have solved in the homework np. 2 (22/10/14).

All you need you can find in

And don't forget to state in the subject of your email: QDA2, Homework
NUMBER, YOUR NAME |

Back to the main page Quantitative Data Analysis II. (presentations, readings, etc.)

What we have done QDA II. 2014 - winter semester