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Class 11 Correlation worksheet
CBSE Social Science. Scatter diagrams, positive and negative correlation, Karl Pearson’s coefficient and Spearman’s rank correlation. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
When two variables move in the same direction, the correlation is:
- zero
- undefined
- negative
- positive
Answer
(d) positive
- 2.
Which pair of variables has positive correlation?
- height and weight of children
- a student’s roll number and height
- the day of the month a person was born and their weight
- shoe size and marks in economics
Answer
(a) height and weight of children
- 3.
What does r = −1 show?
- low positive correlation
- low negative correlation
- perfect positive correlation
- perfect negative correlation
Answer
(d) perfect negative correlation
Section B · short answer
- 4.
What is correlation?
Answer
A measure of the direction and intensity of the linear relationship between two variables.
- 5.
Two judges rank 6 contestants. Judge A: 1, 2, 3, 4, 5, 6. Judge B: 4, 6, 3, 5, 1, 2. Find Spearman’s rank correlation coefficient.
Answer
−0.66
Σd² = 58; rs = 1 − 6 × 58 ÷ (6³ − 6) = 1 − 348 ÷ 210
Section C · long answer
- 6.
Explain the scatter diagram with different patterns.
Answer
Points rising from left to right show positive correlation, falling show negative, a straight line shows perfect correlation, and a shapeless spread shows no correlation.
Fresh sheets for your child
In the app, every Correlation sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.