Free 5-question sample test with instant feedback. See how ready you are.
Question 1
A dataset contains the values 4, 7, 7, 9, 13. What is the mean?
Answer: The mean is 8. Add all values (4+7+7+9+13=40) and divide by the number of values (40÷5=8).
Question 2
What is the median of the dataset: 3, 8, 2, 15, 6?
Answer: The median is 6. First arrange in order (2, 3, 6, 8, 15), then identify the middle value, which is 6.
Question 3
What is the mode of the dataset: 5, 3, 9, 3, 7, 5, 3?
Answer: The mode is 3, because it appears more frequently (3 times) than any other value in the dataset.
Question 4
When a dataset has an even number of values, how is the median calculated?
Answer: The median is the average (mean) of the two middle values after the data is arranged in ascending order.
Question 5
A teacher's test scores are 70, 85, 90, 90, 95. Which measure of central tendency best represents the typical score if one outlier is added at 10?
Answer: The median best represents the typical score because it is resistant to outliers, while the mean would be pulled significantly downward by the extreme low value.