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2 types of data: Qualitative data & Quantitative Data

• Qualitative data:

- Categorical and non-numerical

- Mathematical operations are**meaningless**

• Quantitative Data:

- numerical

- Mathematical operations are**meaningful**

- 2 types: Discrete data & Continuous Data

4 levels of measurement: Nominal, Ordinal, interval and, ratio

• Qualitative data:

- Categorical and non-numerical

- Mathematical operations are

• Quantitative Data:

- numerical

- Mathematical operations are

- 2 types: Discrete data & Continuous Data

4 levels of measurement: Nominal, Ordinal, interval and, ratio

- 1.
**Quantitative Data VS. Qualitative Data**

What are quantitative and qualitative data? - 2.
**Quantitative Data VS. Qualitative Data**

Determine which of the following data is quantitative or qualitative.

i) the marks that students get in a test

ii) the genders of newborn babies

iii) the area codes in phone numbers

iv) the heights of buildings

- 3.
**Characteristics of Quantitative Data**

Determine which of the following quantitative data is discrete or continuous.

i) the number of customers visiting a store over a weekend

ii) the amount of water consumed by a country over the past 10 years

iii) the outcomes of rolling a 6-sided die ten times

iv) the heights of trees in a rainforest

v) students’ shoe sizes in a class - 4.
**Levels of Measurement**

Define the levels of measurement below.

i) nominal

ii) ordinal

iii) interval

iv) ratio

- 5.Identify the level of measurement used in the following scenarios (nominal, ordinal, interval or ratio):

i) A research on the causes of deaths in a country

ii) A research that wants to find out the relationship between the amount of time students spend on preparing for the exam and the marks they get in it.

iii) A survey tries to find out how people rank the importance of: safety, price, speed, and comfort, when they are buying cars.

iv) A research on how humidity in the air changes over the year in a city

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