Learning Analytics Tools Nptel Week 5 Answers
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Learning Analytics Tools Nptel Week 5 Answers (July-Dec 2025)
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Question 1. Which of the following is true about the Pearson correlation coefficient (r)?
a) It can be used to establish a causal relationship between two variables.
b) It measures the strength and direction of a linear association between two numerical variables.
c) Its value ranges from 0 to 1, indicating only positive relationships.
d) It is primarily used for categorical data analysis.
Question 2. For analyzing the linear relationship between two numerical variables and performing a preliminary diagnostic analysis of their association, which of the following visualizations would be most suitable?
a) Bar chart
b) Histogram
c) Scatter plot
d) Pie chart
Question 3. If a scatter plot shows data points clustered closely around a straight line that slopes downwards from left to right, the Pearson correlation coefficient (r) would most likely be:
a) Close to 0
b) Close to +1
c) Close to -1
d) Undefined
Question 4. Given a sequence of states ABABABAABBB, what is the transition probability from state B to state A, based on the example in the provided material?
a) 5/3
b) 3/5
c) 3/6
d) 6/3
Question 5. What is not an iSAT?
a) An interactive visual representation to highlight transitions in data.
b) A learning environment for teaching engineering estimation problems.
c) An algorithm for process mining.
d) A pattern mining tool.
These are Learning Analytics Tools Nptel Week 5 Answers
Question 6. What is the primary difference between Pearson’s correlation and Spearman’s rank correlation regarding the data they analyze?
a) Pearson analyzes linear relationships between raw data, Spearman analyzes monotonic relationships between ranks.
b) Pearson analyzes nominal data, Spearman analyzes interval data.
c) Pearson is for large datasets, Spearman is for small datasets.
d) Pearson can handle outliers, Spearman is sensitive to outliers.
Question 7. The interaction of a learner with a tutoring system is as follows: read, video, quiz, read, read, quiz, video, video, quiz, video, read, read, quiz, read, video, video, read, quiz. The structure of the state transition plot is shown in the diagram below. Choose the correct match between Column A and Column B for the behaviours and their state transition values.
a) 1-iv, 2-i, 3-iii, and 4-ii
b) 1-ii, 2-iii, 3-i, and 4-iv
c) 1-iii, 2-ii, 3-i, and 4-iv
d) 1-iii, 2-ii, 3-iv, and 4-i
Question 8. A researcher finds a strong positive correlation between ‘time spent studying’ and ‘exam scores’. Which of the following is a valid conclusion?
a) More study time causes higher exam scores.
b) There is a tendency for higher study time to be associated with higher exam scores.
c) Students who study less will always fail.
d) The relationship is definitely non-linear.
These are Learning Analytics Tools Nptel Week 5 Answers