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ECAT - Practice Test - Maths - Statistics and Probability Quiz

Attempt 10 MCQs on ECAT - Practice Test - Maths - Statistics and Probability | Quiz 5

41. What is 4C2?



42. Find the mean of 10, 20, 30.



43. Find the median of 10, 20, 30.



44. Find the range of 10, 20, 30.



45. What is variance?



46. What is the standard deviation of a constant?



47. Find the mean deviation about the mean for the data 2, 4, 6.



48. What is the probability that the sum of two dice is even?



49. A bag has 3 red and 4 blue balls. Two balls are drawn without replacement. Find the probability both are red.



50. If the mean of 5 numbers is 10 and the sum of squares is 560, what is the variance?



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