04
Jan
Class 9 - Statistics, Math - Class 9 | NCERTClass 9 math tutorials, class 9 statistics, continuous class intervals, frequency distribution table, grouped frequency distribution, math, mathemafia, mathematics, NCERT, statistics, ungrouped frequency distribution
Question 8: Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows:
1 6 2 3 5 12 5 8 4 8 10 3 4 12 2 8 15 1 17 6 3 2 8 5 9 6 8 7 14 12
Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5 – 10.
How many children watched television for 15 or more hours a week?
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