AKT AKT Data Interpretation and Analysis 1

Question 1

Which type of data is best represented by a histogram?

Accepted Answer

Continuous numerical data

Answer

Histograms display the frequency distribution of continuous numerical data by grouping values into intervals called bins.

Question 2

In a dataset, the value that appears most frequently is called the:

Accepted Answer

Mode

Answer

The mode is the value that occurs most often in a dataset and is the only measure of central tendency applicable to nominal data.

Question 3

A correlation coefficient of -0.85 between two variables indicates:

Accepted Answer

A strong negative relationship

Answer

A correlation coefficient near -1 indicates a strong negative relationship, meaning as one variable increases, the other decreases.

Question 4

Which measure of spread is most affected by extreme outliers in a dataset?

Accepted Answer

Range

Answer

The range is calculated solely from the maximum and minimum values, making it the most sensitive measure to outliers.

Question 5

When analyzing a pie chart, the angle of each slice is proportional to:

Accepted Answer

The percentage each category represents of the whole

Answer

Each slice in a pie chart represents a proportion of the total (360°), so its angle equals the category's percentage multiplied by 360.

AKT - Applied Knowledge Test Practice Test