Random variables
Define discrete and continuous random variables. Give examples of each.
Histogram and Ogive
What is an ogive? How do you construct it from a cumulative frequency table?
Histogram and Ogive
Construct a histogram for the following data:
Class intervals: 0-10, 10-20, 20-30
Frequencies: 4, 6, 5
Cumulative frequency
How do you represent cumulative frequency graphically? Describe the steps.
Cumulative frequency
Create a cumulative frequency table from the following data: 10, 15, 20, 25, 30.
Probability
What is the probability of flipping a coin and getting heads? Explain your reasoning.
Probability
If you draw a card from a standard deck of 52 cards, what is the probability of drawing a heart?
Measures of dispersion
Explain how to find the variance of a data set. Calculate the variance for: 2, 4, 6, 8.
Measures of dispersion
Define range. Calculate the range for the data set: 18, 22, 15, 30, 25.
Measure of central tendency
Determine the mode for the data: 4, 1, 2, 4, 3, 4, 2.
