Practice Direct Method (2.1.4.1) - Data Processing - CBSE 12 Geography

Practise this section

10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Calculate the mean for the following data: 2, 4, 6, 8.
Show hintHide hint
Add all values and divide by the total count.
Question 2.
If the rainfall for one district is 600 mm and the average for 5 districts is 800 mm, what is the deviation?
Show hintHide hint
Deviation = value - assumed mean.
3Question 3.
What is the formula for calculating the mean?
- X = N / Σx
- X = Σx / N
- X = Σx * N
Show hintHide hint
Remember which way goes the division.
4Question 4.
True or False: The sum of deviations in a data set should always equal the mean.
- True
- False
Show hintHide hint
Think about what deviations measure.
Question 5.
Given a dataset of numbers 15, 25, 35, 45, calculate the mean and deviations from an assumed mean of 30.
Show hintHide hint
Remember to calculate the mean first and then the deviations.
Question 6.
A dealer records the rainfall measurements (in mm) as follows: 450, 550, 600. If the assumed mean is 500, compute the mean and deviations.
Show hintHide hint
First calculate the mean, then evaluate each value's deviation from 500.

6 more questions in this section. Enroll free to practise them all.