Intro to Stats

• Mathematics
• Further Education (Key Stage 5)

GCSE Stats Recap

The difference between the highest value and the lowest value

The value that appears most often in a set of data

The middle value in a set of data when the values are arranged from lowest to highest

The total of all the values in a set of data divided by the number of values

Mean

Mode

Range

Median

GCSE Stats Recap

Pie Chart

Bar Chart

Histogram

Frequency Polygon

Box Plot

Cumulative Frequency Curve

Copy and complete the tally chart

GCSE Stats Recap- Tally Chart

Copy and complete the tally chart

GCSE Stats Recap- Bar Chart

a) How many ice creams were sold on Tuesday?

b) On which day were the least number f ice creams sold?

c) How many ice creams in total were sold?

GCSE Stats Recap- Pie Chart

The pie chart shows how students travel to tech.

a) What fraction cycle to tech?

b) what percentage walk?

c)There were 36 students in the group, how many take the bus?

GCSE Stats Recap- Grouped Frequency Table

This grouped frequency table records time taken in seconds, This allows us to collect data which can take any value.

Name another quantity that would be best recorded in a grouped frequency table

GCSE Stats Recap- Histogram

Use the histogram to complete the table

GCSE Stats Recap- Cumulative Frequency

The speed of cars on a road was recorded.

a) how many cars travelled under 50 km/h?

b) 42 cars where over the limit, what is the limit?

Intro to Stats- Types of Data

Discrete Data

Discrete data is data that is made of whole numbers that are counted and not measured.

Continuous Data

Continuous data is measurable data. It cannot be counted as a specific or precise number.

Time taken

Height

Age

Temperature

Number of cars

Outcome of coin toss

Sum of 2 rolled dice

Leon conducts a survey to find the number of people in each of the cars arriving at the school gate between 8 am and 9:30 am.

Discrete Data

Continuous Data

Leon conducts a survey to find the number of people in each of the cars arriving at the school gate between 8 am and 9:30 am.

Tally Chart

Grouped Frequency Table

Leon conducts a survey to find the nationality of students in a university class

Pie Chart

Cumulative frequency curve

Ethan records the temperature in Belfast over 14 days.

Discrete Data

Continuous Data

Ethan records the temperature in Belfast over 14 days.

Tally Chart

Grouped Frequency Table

Ethan records the temperature in Belfast over 14 days.

Pie Chart

Cumulative Frequency Curve