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2TH §2.3 Freq.table, barchart, freq.polygon
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§2.3 Frequency table, Bar chart, frequency polygon
Homework: Exercises 17, 18, 19 (page 57-58)
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Wiskunde
Middelbare school
havo, vwo
Leerjaar 2
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Plan for today
Entry ticket
§2.3 Frequency table, Bar chart, frequency polygon
Homework: Exercises 17, 18, 19 (page 57-58)
Slide 1 - Diapositive
Learning goals
you will learn what a frequency table is
you will learn what a bar chart and a frequency polygon are
Slide 2 - Diapositive
Entry ticket
In a survey, 90 students are asked to name their favourite fruit.
The results you can see in the table on the right.
a) Complete the table by calculating the angle for each fruit.
b) Draw and label the pie chart.
Slide 3 - Diapositive
Complete the table and draw the pie Chart
Slide 4 - Question ouverte
Entry ticket
In a survey, 90 students are asked to name their favourite fruit.
The results you can see in the table on the right.
a) Complete the table by calculating the angle for each fruit.
b) Draw and label the pie chart.
Slide 5 - Diapositive
§2.3 Frequency table, bar chart and frequency polygon
Slide 6 - Diapositive
Frequency
The
frequency
is the number of times a
value
appears.
Look at our previous pie chart. 90 students and their favourite fruit.
This is the
frequency table
that goes with the information given.
Slide 7 - Diapositive
Bar chart
Another diagram you can make is a
bar chart
. Each value gets its own bar. The height or lenght of the bar indicates the corresponding frequency.
Slide 8 - Diapositive
Frequency polygon
A
frequency polygon
is used to show how frequency changes over time. The horizontal axis shows the time, the vertical axis shows the frequency.
Slide 9 - Diapositive
Together....
Slide 10 - Diapositive
Homework
Do §2.3 Exercises 17, 18, 19 (page 57-58)
Correct your answers with another colour pen.
Slide 11 - Diapositive
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