Lesson Notes By Weeks and Term - Senior Secondary 1

Geographical representation of statistical data

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TERM – 2ND TERM

WEEK ELEVEN

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Geography

Topic: GEOGRAPHICAL REPRESENTATION OF STATISTICAL DATA

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

  1. Mention statistical diagrams used in geographical data representation
  2. Construct different statistical diagrams used in representing geographical data,
  3. Enumerate the advantages and disadvantages of each statistical diagram

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher provides the diagrams used for representing geographic data and explain how they are used.

Each student mentions statistical diagrams used in representing geographical data S

STEP 2

EXPLANATION

Teacher discusses the advantages and disadvantages of each data diagram.

Students in small groups, identify the advantages and disadvantages of each statistical diagram.

STEP 3

DEMONSTRATIO

N

Teacher aid students to construct different statistical diagrams used in representing geographical data.

 Students in pairs, construct different statistical diagrams used in representing geographical data.

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

 

The students

copy the note in

their books

 

NOTE

GEOGRAPHICAL REPRESENTATION OF STATISTICAL DATA

Statistical data representation involves using visual tools and techniques to illustrate spatial patterns, distributions, and relationships within geographical data. Geographers often employ various statistical graphics and maps to convey information effectively. The following are diagrams used for representing statistical data.

1. Bar Chart: Consists of rectangular bars, where the length of each bar corresponds to the value it represents. It is used for comparing values across different categories.

Advantages of using bar chart to represent statistical data

  1. Clearly shows comparisons between different categories.
  2. Easy to understand and interpret.
  3. Suitable for both small and large datasets.

Disadvantages:

  1. May not effectively represent trends over time.
  2. Not ideal for displaying relationships between variables.

2. Pie Chart: : Circular chart divided into slices, each representing a proportion of the whole. It's displays the parts of a whole and illustrates the percentage distribution.

Advantages of pie charts to represent statistical data

  1. Visually represents parts of a whole in a simple manner.
  2. Useful for displaying percentages.

Disadvantages:

  1. Can be challenging to compare multiple pie charts.
  2. Not suitable for large datasets or detailed analysis.

3. Line Chart: Connects data points with lines, showing the overall pattern. It's depicts trends and changes over a continuous interval.

Advantages of using line chart to represent statistical data

  1. Excellent for visualizing trends and changes over time.
  2. Clearly displays relationships between variables.

Disadvantages:

  1. May not be suitable for discrete data points.
  2. Can be cluttered and confusing with too much information.

4. Histogram: Bars represent ranges of values, and the height of each bar shows the frequency of data within that range. It's represents the distribution of a continuous dataset.

Advantages of using histogram to represent statistical data

  1. Effectively displays the distribution of a continuous dataset.
  2. Highlights central tendency and variability.

Disadvantages:

  1. Sensitive to the choice of bin sizes.
  2. May not reveal detailed patterns in the data.

EVALUATION: 1. What is statistical data representation?

  1. Identify and explain four diagram for representing statistical data
  2. Identify the advantages and disadvantages of using bar chart to represent statistical data.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively