Welcome to your Grade 12 Mathematics chapter 3
After carefully reading the following 30 questions, choose the correct answer.
1.
Which of the following is a measure of absolute dispersion?
2.
The range of a data set is defined as the:
3.
Variance is defined as the:
4.
Standard deviation is calculated as the:
5.
Relative dispersion is used to compare:
6.
The Coefficient of Variation (CV) is expressed as:
7.
A frequency curve is a smooth curve obtained by:
8.
Sampling is the process of:
9.
Which of the following is a probability sampling technique?
10.
In stratified sampling, the population is divided into groups called:
11.
Systematic sampling involves:
12.
Mean absolute deviation (MAD) is calculated using:
13.
A population consists of:
14.
Which measure of dispersion is most affected by extreme values (outliers)?
15.
If all values in a data set are the same, the variance is:
16.
The sum of deviations of all data points from their mean is always:
17.
Which sampling method is considered "non-probability"?
18.
In cluster sampling, the researcher:
19.
What is the square of standard deviation?
20.
A frequency polygon is used to:
22.
To find the mean of grouped data, we use the:
24.
The standard deviation is expressed in:
25.
Which sampling method ensures every member has an equal chance of selection?
27.
In a symmetric distribution, the frequency curve is:
29.
What is the main purpose of calculating variance?
30.
Which of the following is NOT a measure of dispersion?
