Informatics Practices
Assertion (A): Marker has different elements i.e., style, color, size, etc.
Reasoning (R): We can customize line of a line chart by using marker property of plot() function.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
PyPlot
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Answer
A is true but R is false.
Explanation
A marker in a chart or graph can have various elements such as style (e.g., circle, square, triangle), color, size, and others. The marker property is used to customize the markers (points) in a chart, not the line itself. The line in a line chart can be customized using other properties such as linestyle, linewidth, color, etc.
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Related Questions
Assertion (A): In histogram, X-axis is about bin ranges whereas Y-axis talks about frequency.
Reasoning (R): The bins (intervals) must be adjacent and are often (but are not required to be) of equal size.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
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Assertion (A): Bar graph and histogram are same.
Reasoning (R): A bar graph represents categorical data using rectangular bars. A histogram represents data which is grouped into continuous number ranges and each range corresponds to a vertical bar.
- Both A and R are true and R is the correct explanation of A.
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Hindustan Departmental Stores sell items of daily use such as shampoo, soap and much more. They record the entire sale and purchase of goods month-wise so as to get a proper analysis of profit or loss in their business transactions.
Following is the csv file containing the "Company Sales Data".

Read the total profit of all months and show it using a line plot. Total profit data has been provided for each month. Generated line plot must include the following properties:
- X label name = Month Number
- Y label name = Total profit
Anirudh is trying to write a code to plot line graph shown in the figure below. Help him fill in the blanks in the code and get the desired output.

import matplotlib.pyplot as plt # statement 1 x = [1, 2, 3] # statement 2 y = [2, 4, 1] # Statement 3 plt.plot(x, y, color = 'g') # statement 4 ............... # statement 5 ............... # statement 6 # giving a title to graph plt. ............... ('My first graph!') # statement 7 # Function to show the plot ............... # statement 8(i) Which of the above statements is responsible for plotting the values on canvas?
- Statement 8
- Statement 4
- Statement 1
- None of these
(ii) Statements 5 & 6 are used to give names to X-axis and Y-axis as shown in Fig.1. Which of the following can fill those two gaps?
1.
plt.xlabel('X - axis') plt.ylabel('Y - axis')2.
plt.xtitle('x - axis') plt.ytitle('y - axis')3.
plt.xlable('x - axis') pit.ylable('x - axis')4.
plt.xlabel('x axis') plt.ylabel('y axis')(iii) Raman has executed code with first 7 statements but no output is displayed. Which of the following statements will display the graph?
- plt.display()
- plt.show()
- matplotlib.pyplot.display()
- Both (b) & (c)
(iv) The number of markers in the above line chart are:
- Zero
- Three
- Infinite
- Not defined
(v) Which of the following methods will result in displaying 'My first graph!' in the above graph?
- legend()
- label()
- title()
- Both (a) & (c)