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7. Measure of central tendency


Analysing
7. Measure of central tendency
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In deze les zitten 15 slides, met interactieve quiz en tekstslides.

time-iconLesduur is: 40 min

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Analysing
7. Measure of central tendency

Slide 1 - Tekstslide

Average
An average is a single ‘typical’ value that is used to represent a set of values.

Slide 2 - Tekstslide

Types of average
There are three main types of average that can be calculated to show a typical value from a set of data:
  • Mean 
  • Median
  • Mode 

Slide 3 - Tekstslide

Mean
The mean is the most commonly used average. It is found by finding the total of the values and dividing by how many values there are.

Slide 4 - Tekstslide

Mean
The mean is the most commonly used average. It is found by finding the total of the values and dividing by how many values there are.

Slide 5 - Tekstslide

Mean
The mean is the most commonly used average. It is found by finding the total of the values and dividing by how many values there are.

Slide 6 - Tekstslide

Mean
The mean is the most commonly used average. It is found by finding the total of the values and dividing by how many values there are.

Slide 7 - Tekstslide

Mean
The mean is the most commonly used average. It is found by finding the total of the values and dividing by how many values there are.

Slide 8 - Tekstslide

Median
The median is an average that is found by listing the values in order and finding the middle value.

Slide 9 - Tekstslide

Median
The median is an average that is found by listing the values in order and finding the middle value.

Slide 10 - Tekstslide

Median
The median is an average that is found by listing the values in order and finding the middle value.

Slide 11 - Tekstslide

Mode
The mode is the value that occurs most often. This average can be used for non-numerical values, eg ‘red’.

Slide 12 - Tekstslide

When to use each average
Mean
Median
Mode
-The data is symmetrical (no extreme outliers).

- You want the overall "typical" value.
- Every data point is important.

- The data is skewed or has outliers.

- You want a value that divides the data in half

-You're working with categorical data (e.g., favorite color, shoe size).

-You want to know the most common value.

Slide 13 - Tekstslide

Range
The range is not an average. Instead, it is used to show how varied the data is. 
Range is the difference between the highest value (max) and the lowest value.

Slide 14 - Tekstslide


Slide 15 - Open vraag

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