Data Representation and Visualization Applied Maths - Data Representation and Visualization

What is the difference between a bar chart and a histogram ?
(a) A histogram does not show the entire range of scores in a distribution.
(b) Bar chart are circular, whereas histogram are square.
(c) There are no gap between the bars on histogram.
(d) Bar charts represent numbers, whereas histogram represent percentages.

Which of the following is an example of raw-data:
(a) Original swath files generated from a sonar system
(b) Initial time-series file of temperature values
(c) A real time GPS encoded navigation file
(d) All of the above

A researcher wants to determine whether the circadian temperature cycle is less stable for older compared to middle aged adults. Body temperature in degrees fahrenheit is measured every 15 minutes over a period of 3 days. Choose the appropriate scale of measurement

Children in elementary school are evaluated and classified as non-readers (0), beginning readers (1), grade level readers (3). The classified is done in order to place them in reading groups. Choose the appropriate scale of measurement.

Give two examples of nominal scale.

Give two examples of interval scale.

Give two examples of ratio's scale.

Give two examples of quantitative data.

Give two examples of qualitative data.

Give four examples of data that you collected from your day-to-day life.

The production of wheat and rice of a region are given below:


Represent this information using line diagram and bar diagram.

Vertical bar diagram is used for the _______________ data.

Stub' of a table is the _______________ .

Data collected on religion from the census report are _______________ data.

The most attractive method of data presentation is _______________ .

The following pie chart shows the percentage distribution of the expenditure incurred in publishing book. Study the pie-chart and answer the questions based on it.


(i) If for a certain quantity of books, the publisher of pay ₹ 30,600 as printing cost, then what will be the amount of royalty to be paid for these books?
(ii) What is the central angle of the sector, corresponding to the expenditure incurred on Royalty ?
(iii) The prices of the book is marked 20% above the C.P. If the market price of the book is ₹ 180, then what is the cost of the paper used in a single copy of the book.
(iv) If 5500 copies are published and transportation cost on them amounts to ₹ 82500, then what should be the selling price of the book, so that the publisher can earn a profit of 25% ?

The profits in lakhs of rupees of an industrial house for 2002, 2003, 2004, 2005, 2006, 2007 and 2008 are 5, 8, 9, 6, 12, 15 and 24 respectively. Represent these data using both line diagram and bar diagram.

Draw an appropriate diagram with a view to represent the following data: