Practice Summary (13.5) - Statistics

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Calculate the mean from the following data: 2, 4, 4, 4, 5, 5, 7, 9.
Show hintHide hint
Add all numbers together and divide by how many there are.
Question 2.
What is the mode from this dataset: 1, 2, 2, 3, 4?
Show hintHide hint
Look for the number that appears the most.
3Question 3.
What is the formula for calculating the median in grouped data?
Show hintHide hint
Think of how we use cumulative frequency and class size.
4Question 4.
Is the following statement true? The mode is always equal to the mean.
- True
- False
Show hintHide hint
Consider the definitions of mean and mode.
Question 5.
Given a frequency table for age distribution in a community, calculate the estimated mean age using the Assumed Mean Method.
Show hintHide hint
Ensure you define the assumed mean before applying it in calculations.
Question 6.
Analyze the mode for a scenario where multiple values exist at the highest frequency. Discuss how to communicate this finding effectively.
Show hintHide hint
Think of how datasets can sometimes repeat values.

4 more questions in this section. Enroll free to practise them all.