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Presentation of Data

🎓 Class 11📖 Statistics for Economics📖 10 notes🧠 14 Q&A⏱️ ~15 min

Presentation of DataStudy Notes

NCERT-aligned · 10 notes · 3 shown free

INTRODUCTION

Explanation

INTRODUCTION

In Economics, data collection and organisation are fundamental steps to analyse and understand economic phenomena. However, the data collected are often voluminous and complex, making it difficult to interpret and draw meaningful conclusions directly. Therefore, data must be presented in a compact, clear, and meaningful manner to facilitate comprehension and further analysis. This chapter focuses on the presentation of data, which is a crucial step after data collection and organisation. Presentation of data helps in summarising large amounts of information and making it accessible for decision-making and interpretation. There are three primary forms of data presentation: textual or descriptive presentation, tabular presentation, and diagrammatic presentation. Each form has its own advantages and is suitable for different types and volumes of data. Understanding these methods enables students to present economic data effectively and interpret data presented by others.

  • Data presentation is essential to make voluminous data usable and comprehensible.
  • Three main forms of data presentation: textual, tabular, and diagrammatic.
  • Presentation helps in summarising and interpreting economic data.
  • Effective presentation aids in decision-making and further statistical treatment.
  • 📌 Data Presentation: The process of organising and summarising data to make it understandable.
  • 📌 Textual Presentation: Describing data within narrative text.
  • 📌 Tabular Presentation: Organising data in rows and columns.

TEXTUAL PRESENTATION OF DATA

Explanation

TEXTUAL PRESENTATION OF DATA

Textual presentation involves describing data within the narrative text itself. This method is most suitable when the quantity of data is small and can be easily conveyed through words. It allows the presenter to emphasise certain points and provide context or interpretation alongside the data. However, a major drawback is that the reader has to go through the entire text to comprehend the data, which can be time-consuming and less effective for large datasets. The chapter provides two illustrative cases: one describing the status of petrol pumps and schools during a bandh in Bihar, and another summarising population statistics from the 2001 Census of India. These examples show how data can be woven into a narrative to highlight specific facts or trends. While textual presentation is limited in handling large volumes of data, it remains useful for small datasets or when detailed explanation is needed.

  • Textual presentation describes data within narrative text.
  • Suitable for small quantities of data.
  • Allows emphasis on specific points or trends.
  • Drawback: requires reading the entire text for comprehension.
  • Not suitable for large or complex datasets.
  • 📌 Textual Presentation: Data described in words within the text.
  • 📌 Narrative Data: Data embedded in explanatory or descriptive text.

TABULAR PRESENTATION OF DATA

Explanation

TABULAR PRESENTATION OF DATA

Tabular presentation organises data into rows and columns, making it easier to compare and analyse multiple variables simultaneously. Each cell in the table represents a data point that relates the row heading (stub) and column heading (caption). Thi

Practice QuestionsPresentation of Data

Includes NCERT exercise questions with answers

Q1.Axes divides the plain of a paper into:
A.Two quadrants
B.Three quadrants
C.Four quadrants
D.None

Answer:

Four quadrants

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Q2.Arithmetic line graphs are also known as:
A.Linear graphs
B.Non-Linear graphs
C.Time series graph
D.None

Answer:

Time series graph

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Q3.Graph of successive points of a distribution joined by straight lines in statistical terminology is known as:
A.Frequency distribution
B.Histogram
C.Circular diagram
D.Frequency Polygon

Answer:

Frequency Polygon

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Q4.Median of a distribution can be obtained from:
A.Less than type of Ogive
B.Histogram
C.Circular diagram
D.Polygon

Answer:

Less than type of Ogive

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Q5.Ogive curve occur for:
A.More than type distribution
B.Less than type distribution
C.Both (1) and (2)
D.None

Answer:

Both (1) and (2)

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Q6.Which of the following is a graphical presentation of a frequency distribution of a continuous series:
A.Bar diagram
B.Histogram
C.Circular diagram
D.Polygon

Answer:

Histogram

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Q7.Normal curves are also known as:
A.J- shaped curves
B.L- shaped curves
C.U- shaped curves
D.Bell- shaped curves

Answer:

Bell- shaped curves

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Q8.Histogram is a graphical representation of a frequency distribution of a –
A.individual series
B.discrete series
C.continuous series
D.None

Answer:

continuous series

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