Questions
________ is a set of rectangles with bases as the intervals between class
boundaries (along X-axis) and with are as proportional to the class frequency.
- Bar diagram
- Component bar diagram
- Histogram
- Multiple bar diagram
Histogram is a type of _____.
- Geometric diagram
- Frequency diagram
- Both A and B
- Arithmetic line graph
Which of the following are differences between bar diagram and histogram?
- In a histogram, no space is left in between two rectangles, but in a bar diagram some space must be left between consecutive bars
- The width of a bar is unimportant for the purpose of comparison. The width in a histogram is as important as its height.
- We can have a bar diagram both for discrete and continuous variables, but the histogram is drawn only for a continuous variable.
- All of these
Histogram is suitable for the data presented as _________.
- continuous grouped frequency distribution
- discrete grouped frequency distribution
- individual series
- all the above
Histogram also gives value of _______ of the frequency distribution graphically
- mode
- mean
- median
- all of these
Histogram give a graphical presentation of a continuous frequency distribution.
- True
- False
Histogram give a graphical presentation of a continuous frequents distribution.
- True
- False
When in a frequency distribution class widths are not same we have to draw histogram then,
- We mark class size as width and the given frequency as length and draw the rectangle
- We reduce class size to minimum class size keeping the length same
- We find the proportionate lengths of the class corresponding to minimum width and draw the rectangle.
- None of these
With the help of histogram we can prepare _________.
- frequency polygon
- frequency curve
- frequency distribution
- all of the above
In a histogram with equal class intervals; heights of bar are proportional to _________.
- mid-vales of the class
- frequencies of respective classes
- either (a) or (b)
- neither (a) nor (b)
Classification is applicable in case of ______.
- quantitative data
- qualitative data
- both (a) and (b)
- none of the above
Which of the statement is correct?
- Histograms and historigrams are similar in look
- Cube and square diagrams are similar in look
- Pie-chart and ogives are similar in look
- None of them
The following frequency distribution is classified as
| Classes | Frequency |
|---|---|
| 0-50 | 25 |
| 0-30 | 18 |
| 0-10 | 5 |
- cumulative distribution in less than type
- Cumulative distribution in more than type
- discrete frequency distribution
- cumulative frequency distribution
A core distribution data is given for an inventory measuring physical fitness. The type of graph that will be used to display the information will be _______________.
- Histogram
- Line graph
- Pie chart
- Bar graph
The most common form of diagrammatic representation of a grouped frequency distribution is -
- Ogive
- Histogram
- Frequency polygon
- None of these
When rectangles are drawn with the areas proportional to the frequencies of respective class intervals, what is the diagram called?
- Bar graph
- Frequency polygon
- Pie graph
- Histogram
In histogram, the height of rectangle shows _____
- width of the class
- upper limit of the class
- lower limit of the class
- frequency of the class
Histogram are a great way to show results of
- categories
- continuous data
- both $A$ and $B$
- None of these
Which type of data can be represented by histogram?
- Grouped data
- Ungrouped data
- Continuous data
- None of these
Data on percentage distribution of area of land in acres owned by households in two districts of a particular state as follows:
| Land holding | District-A | District-B |
|---|---|---|
| $0.01-0.99$ | $5.62$ | $13.53$ |
| $1.0-2.49$ | $18.35$ | $21.84$ |
| $2.5-7.49$ | $47.12$ | $39.32$ |
| $7.5-12.49$ | $19.34$ | $12.15$ |
| $12.5-19.99$ | $7.21$ | $7.43$ |
| $20.0-29.99$ | $2.36$ | $5.73$ |
What is the appropriate diagram to represent the above data?
- Pie diagram
- Histogram
- Bar chart
- NONE OF THE ABOVE
Which one of the following statements is not correct with reference to a histogram?
- Frequency curve is obtained by joining the midpoints of the top of the adjacent rectangles with smooth curves
- Histogram is drawn for continuous data
- The height of the bar is proportional to the frequency of that class
- Mode of the distribution can be obtained from the histogram
Histograms, pie charts and frequency polygons are all types of
- one dimension diagrams
- two dimension diagrams
- cumulative diagrams
- none of these
Types of histograms includes
- deviation bar charts
- paired bar charts
- grouped charts
- all of the above
Histograms is classified as one dimensional diagrams because only
- length is considered
- width is considered
- length plus width is considered
- none of these
Sum of all components in normalized histogram is equal to
- $0$
- $2$
- $100$
- $1$
Probability density functions are always
- decreasing
- increasing
- positive
- negative
PDF in histogram equalization stands for
- probability dual function
- partial density function
- parametric density function
- probability density function
Local histogram processing deals with
- whole image
- slices of image
- centre of image
- none of these
Strictly monotonical function guarantee inverse mapping as
- single valued
- multi valued
- dual valued
- none of these
Histogram is technique processed in
- intensity domain
- frequency domain
- spatial domain
- none of these
The statistical data can be represented by diagram using
- Histogram
- Frequency polygon
- Ogive
- None of these
In a histogram, the area of each rectangle is proportional to the class size of the corresponding class interval? If not, correct the statement.
If true then enter $1$ and if false then enter $0$
- $1$
- $0$
- can't determine
- None of these
For which of these would you use a histogram to show the data?
$(a)$ The number of letters for different areas in a postman's bag.
$(b)$ The height of competitors in an athletics meet.
$(c)$ The number of cassettes produced by $5$ companies.
$(d)$ The number of passengers boarding trains from $7{:}00$ a.m. to $7{:}00$ p.m. at a station.
Give reasons for each.
- $a$
- $b$
- $c$
- $d$
Draw the histogram and use it to find the mode for the following frequency distribution.
| House - Rent in Rs. per month | $4000 - 6000$ | $6000 - 8000$ | $8000 - 10000$ | $10000 - 12000$ |
|---|---|---|---|---|
| Number of families | $200$ | $240$ | $300$ | $50$ |
- Rs. $8000$
- Rs. $8350$
- Rs. $8500$
- Rs. $8750$
Represent the following data by histogram and hence compute mode.
| Price of sugar per kg (in Rs.) | 18 - 20 | 20 - 22 | 22 - 24 | 24 - 26 | 26 - 28 | Total |
|---|---|---|---|---|---|---|
| Number of weeks | 4 | 8 | 22 | 12 | 6 | 52 |
- 21.2 Rs.
- 22.2 Rs.
- 23.2 Rs.
- 24.2 Rs.
The diagram used to estimate mode of continuous frequency distribution graphically is _____
- histogram
- frequency curve
- bar diagram
- all of these
Represent the following data using histogram, hence find the mode.
| Height of students (cm) | 140 - 144 | 145 - 149 | 150 - 154 | 155 - 159 |
|---|---|---|---|---|
| Number of students | 2 | 12 | 10 | 4 |
- $146\ cm$
- $147\ cm$
- $149\ cm$
- $150\ cm$
The shoppers who come to a departmental store are marked as : man (M), woman (W), boy (B) or girl (G). The following list gives the shoppers who came during the first hour in the morning.
W W W G B W W M G G M M W W W
W G B M W B G G M W W M M W W
W M W B W G M W W W W G W M M
W W M W G W M G W M M B G G W
- Women
- Men
- Boy
- Girl