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2 cards from this section. Quick, good the night before a test.
What is the range of the dataset 3, 7, 2, 9, 5?
Look for the highest and lowest numbers.
Calculate the mean of the dataset 4, 8, 6.
Add the numbers and divide by how many there are.
What does range measure?
Remember, it focuses on just the extremes of the dataset.
True or False: A small standard deviation means that the data points are closely clustered around the mean.
Consider what it means if values are similar to each other.
A scientist records the heights of plants: 30 cm, 45 cm, 50 cm, 60 cm, 90 cm. Calculate the range and standard deviation. Discuss the implications of your findings.
Calculate range first, then find the mean to determine the deviations.
Given the book sales over five weeks: 200, 400, 300, 500, 600, find the range and standard deviation, then analyze how consistent sales are.
Identify key values and apply SD formula after finding the mean.
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