WEEK 2 PASS STAT1070 WORKSHEET

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WEEK 2 PASS STAT1070 WORKSHEET 1. Draw a visual representation of numerical & categorical data graphs Variable Graph type Visual Numerical Symmetrical/unimodal/bell shaped Skewed to the L/negatively skewed Skewed to the R/Positively Skewed Symmetrical & bimodal Symmetrical & uniform Categorical Frequency table Clustered bar chart Stacked bar chart Bivariate >1 variable Side by side box plot Scatterplot Clustered bar chart Stacked bar chart
2. What are the numerical summaries for centre or location? Define each and explain how to figure them out. 3. Find the mode, median and mean for the following data: 4, 1, 3, 2, 1, 1, 4 4. What are the numerical summaries for spread? Define each and explain how to figure them out. 5. Fill in the table for the following new terminology New Term Explanation Also referred as Independent variable Dependent variable
6. When there is a trend in a scatterplot graph, what does the correlation coefficient number explain to us? Describe the type of results you would see. 7. Fill in the table below to summarise how to would describe the following types of graphs. Graph Type How would comment on its shape? How would comment on its centre? How would comment on its spread? Symmetrical Skewed/ outlier Categorical charts Continuous Y variable and Continuous X variable
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