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+++ b/plotting_data/questions.rst Wed Dec 01 16:51:35 2010 +0530
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+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. How do you declare a sequence of numbers in python?
+ Give example .
+
+ Comma seperated numbers inside two square brackets.
+
+ seq=[1.5,3.2,8.7]
+
+
+2. Square the following sequence?
+
+ distance_values=[2.1,4.6,8.72,9.03].
+
+ square(distance_values)
+
+
+
+3. How do you plot the data as points using plot function?
+
+ By passing an extra parameter '.'.
+
+.. #[[Anoop: It can better if asked as, How do you plot the data as
+ points using plot function?]]
+
+4. Can you comment about the result of this plot command .
+ plot(x, y,'o')
+
+
+ It plots large points.
+
+.. #[[Anoop: give an example and ask what it does, like plot(x, y,
+ 'o'), that makes the question simple]]
+
+5. How do you plot error in Python?
+
+ Using the function error bar.
+
+6. How do I get large red colour dots on a plot?
+
+ By passing the paramter 'ro'.
+
+7. What are the parameters 'xerr' and 'yerr' in errorbar function for?
+
+ xerr - List of error values of variable on x axis.
+ yerr - List of error values of variable on y ayis.
+
+8. How would you plot error bar with a line?
+
+ The fmt parameter for a line will be '-'.
+
+
+
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Plot an errorbar for following experimental data.
+
+ | X | Y | Xerr | Yerr |
+ | 154.9 | 8106 | 8.51 | 165.8 |
+ | 154.3 | 8138 | 8.50 | 166.3 |
+ | 148.7 | 8148 | 7.78 | 161.2 |
+ | 149.6 | 8171 | 7.81 | 162.6 |
+
+in red colour with large dots
+
+2. List the parameters for errorbar and their function?