Tag: graphical representation

Quizzes (3) Questions (20)

Questions Related to graphical representation

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

With the help of histogram we can prepare _________.

  1. frequency polygon

  2. frequency curve

  3. frequency distribution

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A histogram serves as the foundation for constructing other frequency-based visualizations like frequency polygons and frequency curves.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

In a histogram with equal class intervals; heights of bar are proportional to _________.

  1. mid-vales of the class

  2. frequencies of respective classes

  3. either (a) or (b)

  4. neither (a) nor (b)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a histogram with equal class intervals, the area of the rectangle is proportional to the frequency. Since the width is constant, the height must be proportional to the frequency.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

Classification is applicable in case of  ______.

  1. quantitative data

  2. qualitative data

  3. both (a) and (b)

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Classification is the process of arranging data into groups or classes based on common characteristics, which applies to both quantitative (numerical) and qualitative (categorical) data.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

The following frequency distribution is classified as 

Classes Frequency
0-50 25
0-30 18
0-10 5

  1. cumulative distribution in less than type

  2. Cumulative distribution in more than type

  3. discrete frequency distribution

  4. cumulative frequency distribution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The data shows cumulative frequencies (5, 18, 25) for increasing upper boundaries (10, 30, 50), which is the definition of a 'less than' cumulative frequency distribution.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

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 _______________.

  1. Histogram

  2. Line graph

  3. Pie chart

  4. Bar graph
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A histogram is the appropriate choice for displaying continuous grouped frequency distribution data measuring physical fitness. Histograms are specifically designed for continuous data organized into class intervals, which is typical for physical fitness measurements like height, weight, or endurance scores.

Multiple choice maths graphical representation histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

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
  1. $146\ cm$
  2. $147\ cm$
  3. $149\ cm$
  4. $150\ cm$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
max. frequency = $12$
so group is = $145-149$
so mode = $L+\dfrac{f _{1}-f _{0}}{2f _{1}-f _{0}-f _{2}}\times w$
$L$= lower class boundary of the modal group
$f _{1}$ = frequency of the modal group
$f _{0}$= frequency of the class preceding or just before the modal class
$f _{2}$ = frequency of the class succeeding or just after the modal class
$w$= group width
mode = $145+ \dfrac{12-2}{2\times 12-2-10}\times 4$
mode= $145+3.333$
mode = $148.333$
mode = $147$
Multiple choice maths graphical representation histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

For which of these would you use a histogram to show the data?

  1. The number of letters for different areas in a postman's bag.

  2. The height of competitors in an athletics meet

  3. The number of cassettes produced by 5 companies

  4. The number of passengers boarding trains from 7:00 a.m. to 7:00 p.m. from a station.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice maths graphical representation histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

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

The mode shoppers are: 

  1. Women

  2. Men

  3. Boy

  4. Girl
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

From the question we are going to form frequency table :

$Shoppers$  $No.\,of\,shoppers$ 
$M$  $15$ 
$W$  $28$ 
$B$  $5$ 
$G$  $12$ 

From table we can see, $Women(W)$ has maximum number of shoppers.

$\therefore$  The mode shoppers are $=Women$