GCSE Secondary Maths Age 13-17 - Probability & Statistics: Frequency Table - Explained

The video tutorial explains how to interpret a frequency table showing the number of emails sent by teachers. It guides students on drawing a frequency polygon using mid values and analyzing data to determine if a quarter of teachers sent more than 30 emails. Key points include using mid values for frequency polygons and careful reading of questions.

What does the frequency table provide information about?

• The number of cars in a parking lot

• The number of emails sent by teachers

• The number of students in a class

• The number of books in a library

What is the mid value used for when plotting a frequency polygon?

• To calculate the median

• To find the total frequency

• To determine the range of data

• To plot points on the graph

How do you connect the points when drawing a frequency polygon?

• With curved lines

• With straight lines

• With dashed lines

• With dotted lines

What is the first step in determining if Nalini's statement is correct?

• Calculate the total number of emails

• Count the number of teachers who sent less than 30 emails

• Find the number of teachers who sent more than 30 emails

• Determine the average number of emails sent

What fraction represents a quarter in decimal form?

• 0.15

• 0.20

• 0.25

• 0.30

Why did some students make a mistake regarding Nalini's statement?

• They misread 'at least' as 'less than'

• They used the wrong mid value

• They calculated the wrong total number of teachers

• They plotted the points incorrectly

What should you remember when you see the term 'frequency polygon'?

• Calculate the mean

• Find the range

• Plot the mid value

• Use the total frequency