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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is data?
💡 Hint: Think about what kind of information statistics deal with.
Question 2
Easy
Define raw data.
💡 Hint: Consider data that hasn't been sorted or summarized.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the mean of the following numbers: 10, 20, 30?
- 15
- 20
- 25
💡 Hint: Add the numbers first before dividing.
Question 2
True or False: The median is always the highest value in a dataset.
- True
- False
💡 Hint: Consider how the median is determined.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are given the following ages of 10 people: 18, 20, 22, 28, 30, 32, 35, 42, 50, and 55. Calculate the mean, median, mode, and create a grouped frequency table for this dataset.
💡 Hint: Use definitions of mean, median, and the process of grouping data into ranges.
Question 2
A school collects the heights of its students and groups them into intervals. If the frequency distribution shows 5 students in the range of 140-149 cm, 10 students in 150-159 cm, and 4 students in 160-169 cm, find the class mark for each interval.
💡 Hint: Use the class mark formula: (Upper Limit + Lower Limit) / 2.
Challenge and get performance evaluation