Class 9 Biology · Chapter 11 · Test 3
Mean
25 MCQs • Practice the definition, formula, calculation, and interpretation of the mean using the exact data and examples provided in the chapter.
25 questions · 20 min · 25 marks
Want to try first? Take the free Biology test: Biology Branches 1
Sample questions
The first 5 of 25. Try each one, then tap to see the answer.
Question 1
What is the mean also known as?
- AThe average
- BThe middle value
- CThe most frequent value
- DThe highest value
Show answerHide answer
Answer: A
The chapter states that the mean is also known as the average.
Question 2
What does the mean represent?
- AThe central value of a data set
- BThe most frequent value only
- CThe lowest value
- DThe difference between values
Show answerHide answer
Answer: A
The chapter states that the mean represents the central value of a data set.
Question 3
How is the mean calculated?
- ASum of all values divided by the number of values
- BHighest value divided by lowest value
- CMiddle value multiplied by the number of values
- DMost frequent value divided by two
Show answerHide answer
Answer: A
The mean is the sum of all the values in a data set divided by the number of values.
Question 4
Which formula represents the mean?
- ASum of all data points ÷ Number of data points
- BNumber of data points ÷ Sum of all data points
- CHighest value ÷ Lowest value
- DMiddle value ÷ Number of data points
Show answerHide answer
Answer: A
The formula given in the chapter is the sum of all data points divided by the number of data points.
Question 5
What is the first quantity needed to calculate the mean?
- AThe sum of all data points
- BOnly the highest value
- COnly the middle value
- DOnly the most frequent value
Show answerHide answer
Answer: A
The formula requires the sum of all data points.
More tests in Biostatistics
Practise with a free account
Save your scores, see which chapters need work, and keep a notebook of every question you got wrong.