Essay PSYC30013: Research Methods for Human Inquiry – Statistics Assignment Help

Assignment Task:

Task:

Meatballs

The opening up of relations between Bunnyland and Otherland has been great for Gladly. He hadn’t realised how hard he found it as one of the few bears in a land full of bunnies until things changed. He ended up making fast friends with Super Size, who also had struggled with a similar alienation being so large and different. He was still large and different, but with Gladly that didn’t seem to matter, and the two bonded over one of their favourite topics: food. Now that they were growing so much more food, both Gladly and Super Size’s persistent hunger was assuaged, and the two friends turned their thoughts to how they could share their love of food with others. One day Gladly had an idea: they could start a restaurant! It was ideal for both of them. They could be around friends all day, and make use of all of the fantastic new foods being grown in their land. Before long, their restaurant was the social hub linking Bunnyland and Otherland. Located on the border, Meatball Cafe was a vibrant place of food, conversation, and laughter. No longer did Gladly wonder what he wanted to do with his life: he knew! And best of all, there were meatballs every day. Being responsible business owners, Gladly and Super Size kept track of their sales and before long started wondering which day they sell more meatballs: Friday, Saturday, or Sunday. This data can be found in the dm tibble, which has been loaded for you. Each row corresponds to the data from one week. There are three columns: week: What week it was day: Can take three possible values: Friday, Saturday, or Sunday for that week meatballs: The number of meatballs sold on that day Their research question is whether on average the same number of meatballs are sold on each of the three days. Your job in the next few problems is to use your R and statistics knowledge to find the answer to this question.

Q1 [3.5% of total marks] First, as always, let’s visualise the data. In the code chunk for this question make a bar plot showing how the number of meatballs varies by day of the week. Your figure should have bars with nontransparent black outlines, error bars corresponding to standard error, a semi-transparent colour scheme for the bar colours with a different colour for each day, the individual data points in the same colour as the bar colours (and not transparent), colours other than the default, and of course a title, informative axis labels, and a nice theme.

Q2 [3.5% of total marks] There are two assumptions you should check given this research question. Check them in the code chunk for this question. In 70 words or less, indicate what assumptions you are checking and what the results of the code indicate. Was either assumption violated? How can you tell?

Q3 [4% of total marks] Run the appropriate statistical test to evaluate the research hypothesis, given the results of Q2. Report on the results in 70 words or less. In your report, don’t worry about including descriptive statistics or the results of the assumption check from Q2 but do include an explanation of which statistical test you used and why, what the predictor and outcome variables were, the appropriate stats reference, and the interpretation of this data in terms of the research question. Don’t worry about reporting effect size or pairwise tests.