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ECAT - Practice Test - Maths - Statistics and Probability Quiz

Attempt 10 MCQs on ECAT - Practice Test - Maths - Statistics and Probability | Quiz 3

21. For independent events, what is P(A|B)?



22. What is the number of permutations of n distinct items?



23. What is the formula for combinations?



24. How many ways can you arrange 3 books on a shelf?



25. How many ways to choose 2 items from 4?



26. What is the mean of the first n natural numbers?



27. What is the variance of a constant?



28. If you add 5 to every data point, what happens to the mean?



29. If you multiply every data point by 2, what happens to the standard deviation?



30. What is the probability of rolling a sum of 7 with two dice?



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