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3 cards from this section. Quick, good the night before a test.
Calculate the range for the dataset [10, 15, 7, 20].
To find the range, subtract the smallest value from the largest value.
What does a low standard deviation tell you?
Think about how closely clustered data points might be.
What is the formula for calculating range?
Think about how you find the spread of numbers.
True or False: A higher standard deviation indicates that data is less spread out.
Consider the meaning of the term 'spread out'.
Given the data points [5, 10, 15, 20], calculate the range, variance, and standard deviation.
Break the problem down into parts: find range first, then mean for variance.
Consider a set of exam scores: [50, 75, 100, 95]. Discuss how you would assess the variability and what measures you would use.
Use the steps we learned to conduct the assessment.
4 more questions in this section. Enroll free to practise them all.
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