Second half of semester

Six workshops are held during the second half of the semester:

  • Five of the workshops cover common statistical analyses. Each is three hours long and there is plenty of time to do practical examples to check you understand the material.
  • The sixth workshop is a practical computing class. There are multiple identical one-hour sessions held each semester on using SPSS to do hypothesis tests for means.

No registration required - just turn up!

Please make sure you bring your calculator with you to these workshops! 

Please note that workshops in italics have already been held this semester.


Chi-Square Tests

In Summer School 2019, this workshop was held as follows: Thursday 7 February, 10am-1pm, LibB28 (Basement of the General Library)

What's this workshop all about? 

This three-hour workshop looks at the Chi-square test for independence (two categorical variables). It is excellent exam preparation for Chapter 9.

Please bring your calculator!

Topics covered include: 

  • Chi-square test assumptions
  • stating hypotheses
  • doing the test by hand including calculating expected counts, the Chi-square test statistic and degrees of freedom
  • interpreting computer (SPSS) output


Hand-out   [open in new window|view inline]


Scanned slides - Notes (pages 1 to 8)   [open in new window|view inline]


Scanned slides - Questions (pages 9 to 40)   [open in new window|view inline]

Regression and Correlation

In Summer School 2019, this workshop was held as follows: Friday 8 February, 10am-1pm, LibB28 (Basement of the General Library)

What's this workshop all about? 

This three-hour workshop looks at simple linear regression - fitting straight lines to data - and correlation (two numeric variables). It is excellent exam preparation for Chapter 10.

Please bring your calculator!

Topics covered include: 

  • interpreting computer (SPSS) output including scatter plots
  • simple linear regression including the least squares regression line, its hypothesis tests/assumptions and residuals
  • making predictions (confidence/prediction intervals)
  • correlation


Hand-out   [open in new window|view inline]


Scanned slides   [open in new window|view inline]

Hypothesis Tests: Proportions

Includes for a single proportion and difference between two proportions.

In Summer School 2019, this workshop was held as follows: Monday 11 February, 10am-1pm, LibB28 (Basement of the General Library)

What's this workshop all about? 

This three-hour workshop covers appropriate statistical analyses for exploring single proportions and differences between two proportions (i.e. one and two categorical variables). It is excellent exam preparation for Chapters 6 and 7 (proportions).

Please bring your calculator!

Topics covered include calculating and interpreting t-tests and confidence intervals for:  

  • a single proportion and 
  • differences between two proportions 


Hand-out   [open in new window|view inline]


Scanned slides - Notes (pages 1 to 18)   [open in new window|view inline]


Scanned slides - Questions (pages 19 to 48)   [open in new window|view inline]

Hypothesis Tests: Means

Includes for a single mean, paired data and differences between two or more means.

In Summer School 2019, this material was covered in two workshops as follows: 

  • Wednesday 13 February, 10am-1pm, LibB28 (Basement of the General Library)
  • Wednesday 13 February, 1.30-4.30pm, LibB28 (Basement of the General Library)

What are these workshops all about? 

These two three-hour workshops cover appropriate statistical analyses for exploring differences between means (averages). They are excellent exam preparation for Chapters 6, 7 and 8 (means).

Please bring your calculator!

Topics covered include: 

  • initial data display and interpreting plots
  • hypothesis tests (t-tests and the F-test for 1-way ANOVA) including setting up hypotheses and interpreting P-values and confidence intervals.

 

In Summer School, 2019, we covered one handout over the two workshop sessions. The morning session revised Chapters 6 and 7 (means), i.e. the notes on pages 1 to 15 of the handout. The afternoon session revised Chapter 8, i.e. the notes on pages 16 to 27 of the handout. Selected questions from page 28 to 56 of the handout were covered in each session.


Hand-out   [open in new window|view inline]


Scanned slides - Notes from morning session (pages 1 to 15)   [open in new window|view inline]


Scanned slides - Notes from afternoon session (pages 16 to 27)   [open in new window|view inline]


Scanned slides - Practice questions (pages 28 to 56)   [open in new window|view inline]

Hypothesis Tests in SPSS

In Summer School 2019, four identical sessions of this workshop will be held as follows:

  • Wednesday 30 January, 12.30-1.30pm, Lab 302-160
  • Wednesday 30 January, 1.30-2.30pm, Lab 302-160
  • Monday 4 February, 12.30-1.30pm, Lab 302-160
  • Monday 4 February, 1.30-2.30pm, Lab 302-160

Lab 302-160 is a computer lab on the first floor of Building 302 (Science Centre), next to the Stats Assistance Room - the easiest access is from Symonds St or via the Science Student Centre.

No booking required – just turn up to the session that suits your timetable!

What's this workshop all about? 

This one-hour practical workshop covers using SPSS to carry out hypothesis tests for numeric data where differences in means are explored. This workshop is suitable for students with little/no experience using SPSS. Stats 101/101G/108 students will find it very useful preparation for the SPSS work they will need to do in Assignment 3.

Topics covered include:

  • stating hypotheses
  • creating plots
  • carrying out hypothesis tests including t-tests and the F-test for 1-way ANOVA


Hand-out   [open in new window|view inline]


Answers   [open in new window|view inline]

Useful data files:


Batteries.sav


ElectricShavers.sav


RoadFatalities.sav


GunDeaths.sav

 
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