Quantitative Skills

Question 1

What is the Median?

Answer 1

sort values and take the middle number. Even number of elements? Take the average of the middle two.

Question 2

What is the mode?

Answer 2

Captures the highest frequency (= highest bar) in the histogram.

Question 3

What is the Mean?

Answer 3

Add up all values and then decide them by the number of values

Question 4

What is a histogram?

Answer 4

Is a bar chart to visually represents a frequency distribution. The widths represents class intervals and derive from a continuous probability distribution

Question 5

What are the steps of creating a histogram?

Answer 5

• Collect raw data
• Make intervals
• Calculate frequencies
• Create histogram

Question 6

What is an object in context of statistical concepts?

Answer 6

Persons, animals or things, characteristic features of which or whom are subject to statistical research

Question 7

What is Population in the context of statistical concepts?

Answer 7

A collective of objects

Question 8

What is a VARIABLE in the context of statistical concepts?

Answer 8

• A notable characteristic of population; its value can differ for different objects
• variables are denoted by X, Y, Z
• Values are denoted as X1, X2, X3