As participants analyze data, consider the following :
- While the discrete data has been collected and provided to you, how would you describe the research objective? You, the statistician get to determine your objective. State it. (Participants may consider data sets containing continuous data, in order to have a variety of possibilities for students.)
- Use descriptive statistics to organize the discrete data:
- Construct a histogram , stem and leaf plot, dot plot, and /or dot plot
- Describe the shape of the data distribution, given your findings
- Calculate the three measures of central tendency and explain why which is the best measure of central tendency for this data set
- Calculate the three measures of dispersion and describe the one that you feel is most efficient in expressing the “spread” of the data values
- Assume the data is bell shaped. Use the Empirical Rule to describe the data set
- Using Measures of Position and Outliers:
- Select any two data values and calculate their z scores. Describe what these values mean in relation to the data set.
- Given the same two data values, calculate and interpret their relative standings (percentiles) within the data set.
- Calculate the Five Number Summary
- Draw a boxplot and identify outliers
- Describe the relation between two variables
- Draw a scatter diagram
- Calculate and interpret r
- Describe any lurking variables
- Find the least squares regression line and interpret the slope and y-intercept
- Select any two explanatory data values and predict their associated y values. Calculate the residuals as well. Describe what the residuals mean / represent.
- Compute and interpret the coefficient of determination
- Probability
- Using your own creativity, explore and describe disjoint and independent events
- Develop a probability experiment using the Classical and Empirical Methods
- Solve a probability experiment using the General Multiplication Rule
- Solve a probability problem using AT Least Probabilities.
- Develop a probability experiment using Conditional Probability
- Normality
- Assess normality of data
- Confidence Intervals
- Construct confidence intervals when intervals about a population mean when the population standard deviation is known
- Construct confidence intervals when intervals about a population mean when the population standard deviation is unknown
- Construct confidence intervals about a population proportion
- Hypothesis Testing
- For a population mean when the standard deviation is known
- For a population mean when the standard deviation is unknown
- For a population proportion
- Inference about two means when samples are dependent
- Inference about two means when samples are independent
- Inference about two population proportions
- Goodness of Fit Test
- Test for Independence and Homogeneity of Proportions