# 6.1 categorizing and displaying data/measures of central tendencies

Good morning!
Schedule:
• Introduction
• Learning goals
• Representing sets of data
• Homework
• Practice
1 / 18
Slide 1: Tekstslide
WiskundeMiddelbare schoolvwoLeerjaar 3

In deze les zitten 18 slides, met interactieve quiz, tekstslides en 1 video.

## Onderdelen in deze les

Good morning!
Schedule:
• Introduction
• Learning goals
• Representing sets of data
• Homework
• Practice

#### Slide 1 -Tekstslide

Learning goals
At the end of this lessons I can:

• Draw and read a stem-and-leaf diagram
• Calculate the measures of central tendency of any data

#### Slide 2 -Tekstslide

Stem-and-leaf diagram

#### Slide 3 -Tekstslide

Stem-and-leaf diagram

#### Slide 4 -Tekstslide

Stem and leaf worksheet

#### Slide 5 -Tekstslide

Measures of central tendency
Mode: The value that occurs most often

Median: The middle value (when the data is put in order)

Mean: The average for the dataset

#### Slide 6 -Tekstslide

Measures of central tendency
Median: The middle value (when the data is put in order)

n = amount of values
When n = odd

2(n+1)
Median =           th value
n = 19

#### Slide 7 -Tekstslide

Measures of central tendency
Median: The middle value (when the data is put in order)

n = amount of values

When n = even

Median =           th value

Take average of the middle values
2(n+1)
n = 30

#### Slide 8 -Tekstslide

Mode =

Median =

Range =

Key: 6|4 represents a score of 64
90
74
86
84
58
44

#### Slide 9 -Sleepvraag

Green              I would like a challenge
Orange           I would like to have some more practice
Red                  I would like to have some more practice and some  more help

#### Slide 17 -Tekstslide

Measures of dispersion

Range: The difference between the largest and smallest value