SCI4405 | Research Practice

Google ‘bad graph’. Select any of the numerous examples that will be shown in the search results and explain three things you think make it a bad graph. Include a picture of the graph in your answer (include a reference url).

In no more than 150 words, explain the differences between research based on an experimental design, a quasi-experimental design and an observational study.

Read the Motulsky et.al. (2014) journal article provided on the StudyDesk and in 200 words or less describe your understanding of p-hacking and why it is considered a bad approach to research. Do NOT copy sections of text directly out of the Motulsky paper – your answer MUST be in your own words.

Read the Broman & Woo (2017) journal article provided on the StudyDesk.

Some data collected and entered into a spreadsheet is shown below. Identify four potential problems with this data entry.

Join the objects below with arrows showing relevant relationships, identify the relationships and then provide a definition of the 4 terms named in the objects.

The average length of mouse tails was measured to see if there was a difference in tail length between black and white mice. Based on a t-test a highly significant difference was found (p<0.001)

Using the additional information below, comment on how you would interpret this ‘significant’ result.

Read the Ioannidis et.al. (2005) journal article provided on the StudyDesk and in 200 words or less describe your understanding of ‘effect-size’ and how it can affect research results. Include in your answer some discussion of the relationship between effect-size and sample-size on the research outcomes. Do NOT copy sections of text directly out of the Ioannidis paper – your answer MUST be in your own words.

Complete the table below by indicating the appropriate graph type for each variable type:

Quantitative                                Categorical

Complete the table below by indicating the appropriate graph type for each combination of variables:

Quantitative                                Categorical