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4 cards from this section. Quick, good the night before a test.
What is meant by a discrete series?
Think about examples from daily life.
Define frequency in statistics.
Consider how many students scored a specific grade.
What does the direct method of calculating mean involve?
Remember the formula used!
True or False: The assumed mean method requires using actual observed values only.
Think of it as a simplified approach!
A farmer counts his apples in rows: 30 apples of size A, 60 apples of size B, and 10 apples of size C. Using the direct method, calculate the average size if A = 1cm, B = 2cm, C = 3cm.
Don't forget to multiply size with frequency first!
Using the step deviation method, given plot sizes of 80, 100, and 120 with frequencies 5, 10, and 15 respectively, calculate the mean assuming 100 as the mean.
Start with deviations and remember to sum them!
4 more questions in this section. Enroll free to practise them all.
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