Topic 9: Data Collection and Presentation

By the end of this topic, you will be able to:

1. explain the differences between types of data
2. collect and represent simple data from the local environment using tally chart, bar chart, pie chart and line graph

Keywords

1. bar chart
2. continuous
3. data
4. discrete
5. line graph
6. pie chart
7. qualitative
8. quantitative
9. tally chart

Introduction

Every 10 years, Uganda Bureau of Statistics counts the number of people in the country, and also captures information about them for planning purposes. Presenting data in form of visual summaries makes it very easy to interpret it.

In this topic therefore, you will learn to collect and present different sorts of data.

Understanding the Difference Between Types of Data

Activity 9.1 Identifying the types of Data (work in groups)

What you need: notebook, and pen

What to do:

1. Identify which of the following data categories is Qualitative, Discrete, or Continuous. Give a reason for your answers.

2. List other examples of each data type?

3. Present your work to the whole class

a) Which columns in the database contain quantitative data?

b) Which columns in the database contain continuous data?

c) If the other 2 districts are to be added to the district, what would you include on the database?

d) Which other column can you add to the database?

2. From your local environment collect data and classify it as qualitative and quantitative data.

3. Odeke is ‘tall,’ he likes ‘black’ clothes and his favourite dish is ‘Matooke’ Odeke is 16 years old, his height is 18 meters and the size of his shoes is 14 ft and weighs 75 kg. Separate qualitative and quantitative data from the statement above.

Collecting and Presenting Simple Data from the Local Environment using Tally, Bar Chart, Pie Chart and Line Graph.

Collecting and Presenting data on a tally chart You can collect data on a task, organise it, and use tally charts to present it. Data can then be displayed and interpreted using:

a) bar charts, b) pie charts,

c) line graphs, and d) pictographs.

Activity 9.2 Collecting and Presenting data in tally charts (work in groups)

What you need: notebook, and pen

What to do:

Identify the means each learner of your group uses to come to school. How many of you in the class use the same means of transport?

Present your information in a tally chart as below

a) Represent your information using a:

i) Bar chart ii) Pie chart iii) Line graph

b) Record your conclusions from the data above.

c) Present your work to the whole class.

Example

Miriam collected data on the number of patients who were admitted in a hospital on a certain day. She put the data in the table below.

iii) Presenting the data on a pie chart:

Obtain the angle share of each ward.

Total number of patients = 13+ 9 + 16 + 10 = 48 13

Men’s ward: x 13/48 x 360° = 97°

Maternity ward: 9/48 x 360° = 68°

Children’s ward: 16/48× 360° = 120°

Women’s ward: 10/48 x 360° = 75°

Pie chart showing number of patients admitted in hospital on a particular day.

Exercise 9.2

1. UNHCR is organising a charity walk next week to collect relief items that will go to refugees in Nakivale resettlement. 40 members were registered on day one and their weight(s) were measured and recorded as shown.

a) Make a tally chart to sort the data.

b) How many members weighed 58kg?

2. Ivan, the class teacher of S.1 interviewed his pupils on the fruits they like most. 6% liked mangoes, 23% liked oranges, 21% liked apples, 30% liked watermelon and the rest liked pineapples. 102

a) What percentage likes pineapples?

b) Represent the information above on a pie chart.

c) If they are 50 students in the class, find the number of students who liked mangoes, oranges, apples, watermelons and pineapples.