04
Jan
Question 5: A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows:
0.03 0.08 0.08 0.16 0.05 0.02 0.11 0.08 0.12 0.08 0.01 0.10 0.11 0.07 0.05
0.09 0.04 0.17 0.06 0.18 0.20 0.13 0.22 0.07 0.06 0.09 0.18 0.07 0.01 0.04
Make a grouped frequency distribution table for this data with class intervals as 0.00 – 0.04, 0.04 – 0.08, and so on.
(ii) For how many days, was the concentration of sulphur dioxide more than 0.11 parts per million?
Statistics
This tutorial is recommended for the beginners to watch to understand the following:
- What is statistics
- Data
- Information
- Frequency distribution table
- Ungrouped
- Grouped
- Class Intervals
- Overlapping
- Non-overlapping
- Class limits
- Upper class limit
- Lower class limit
Chapter 14 – Statistics
=> Introduction to Statistics – Must watch tutorial
