Probability and statistics
Review the permitted syllabus objectives and practice reviewed questions for this CSCA topic.
What to study
- classical probability models and calculations
- mean, variance and related numerical characteristics of data
- basic concepts of the normal distribution
The scope shown here follows the syllabus-derived guardrails used by the CSCAPrep question factory. Related advanced material is not added unless it appears in the defined scope.
Practice this topic
Easy · Probability and statisticsA bag contains 4 red marbles, 3 blue marbles, and 5 green marbles. If one marble is drawn at random, what is…Standard · Probability and statisticsA fair six-sided die is rolled twice. What is the probability that the product of the two numbers rolled is even?Easy · Probability and statisticsThe heights (in cm) of five students are 150, 160, 170, 180, and 190. If each height is increased by 5 cm,…Easy · Probability and statisticsFor a standard normal distribution, what is the approximate probability that a randomly selected value lies between -1 and 1?Standard · Probability and statisticsThe numbers 4, 8, 12, 16, and 20 have a mean of 12 and a variance of 32. If each number is…Standard · Probability and statisticsA box contains 3 red balls, 2 blue balls, and 5 green balls. Two balls are drawn at random without replacement. What…Standard · Probability and statisticsA jar contains 5 red marbles, 3 blue marbles, and 2 green marbles. Two marbles are drawn at random without replacement. What…Easy · Probability and statisticsA fair coin is tossed 4 times. What is the probability of getting exactly 2 heads?Easy · Probability and statisticsThe numbers 2, 4, 6, 8, and 10 have a mean of 6 and a variance of 8. If each number is…Standard · Probability and statisticsA box contains 6 red balls and 4 blue balls. Two balls are drawn at random without replacement. What is the probability…