Presentation of Data - Online Test
Q1. Smooth curve joining the points corresponding to the frequency and provides frequency curve of the data
Answer : Option A
Explaination / Solution:
The frequency curve is obtained by drawing a smooth freehand curve passing through the points of the frequency polygon as closely as possible. It may not necessarily pass through all the points of the frequency polygon but it passes through them as closely as possible.
Q2. A component part chart can be presented in the form of
Answer : Option B
Explaination / Solution:
Component bar diagrams are suitable for data having different components. Similarly, Circles also can be used to present component data by sub dividing the circle and preparing pie chart.
Q3. Graphic presentation of a cumulative frequency distribution is
Answer : Option B
Explaination / Solution:
By using cumulative frequencies, we can prepare less than type and more than type ogive.
Q4. Which of the following is prepared by using class intervals and frequencies?
Answer : Option A
Explaination / Solution:
These three can be prepared when data is given in the form of class intervals and corresponding frequencies.
Q5. Which of the following is not rule for constructing a line graph
Answer : Option A
Explaination / Solution:
An arithmetic line graph is also called time series graph. In this graph time (hour, day/date, week, month, year, etc.) is plotted along x-axis and the value of the variable (time series data) along y-axis. A line graph by joining these plotted points, thus, obtained is called arithmetic line graph (time series graph). It helps in understanding the trend, periodicity, etc. in a long term time series data.
Q6. In a bar chart the method used to distinguish one bar from another must be displayed separately such display is called
Answer : Option D
Explaination / Solution:
The legend displays the series in a chart with a predefined symbol and the name of the series.
Q7. Smooth curve joining the points corresponding to the frequency and provides frequency curve of the data
Answer : Option C
Explaination / Solution:
The frequency curve is obtained by drawing a smooth freehand curve passing through the points of the frequency polygon as closely as possible. It may not necessarily pass through all the points of the frequency polygon but it passes through them as closely as possible.
Q8. The total expenditure incurred by an industry under different heads is best presented by
Answer : Option B
Explaination / Solution:
Component bar diagrams or charts, also called subdiagrams, are very useful in comparing the sizes of different component parts (the elements or parts which a thing is made up of) and also for throwing light on the relationship among these integral parts. For example, sales proceeds from different products, expenditure pattern in a typical Indian family (components being food, rent, medicine, education, power, etc.), budget outlay for receipts and expenditures, components of labour force, population etc. Component bar diagrams are usually shaded or coloured suitably.
Q9. A component part chart can be presented in the form of
Answer : Option D
Explaination / Solution:
A component part chart can be presented by circle through pie graph by converting the frequencies into angles and it also can be presented in the form of component bar graph by converting frequencies into percentage.
Q10. Graphic presentation of a cumulative frequency distribution is
Answer : Option B
Explaination / Solution:
Ogive is also called cumulative frequency curve. As there are two types of cumulative frequencies, for example "less than" type and "more than" type, accordingly there are two ogives for any grouped frequency distribution data.
