Data Collection / Display

In this topic, students explore the essential processes involved in gathering, organizing, and presenting data. They will learn how to conduct surveys, use tally charts, and organize raw data into frequency tables. The focus is also on visual representation using bar graphs, pie charts, histograms, and line graphs. The aim is to help learners interpret data accurately and draw meaningful conclusions—skills that are crucial for scientific inquiry, business decisions, and everyday life.

Learning Outcomes:
The learner should be able to:

• Construct and interpret bar charts, histograms, pie charts, and line graphs.
• understand mode, mean and median, as measures of location/central tendency and knows how to find them and when to use them.
• understand range as a measure of dispersion/spread and how to find it.
• Organize raw data into meaningful frequency tables.
• draw and use frequency tables for ungrouped data.
• draw and use frequency tables for grouped data.
• calculate the mean using an assumed mean.
• draw a histogram with equal class intervals and uses it to estimate the mode.
• draw a cumulative frequency curve(ogive) and uses it and uses it to estimate the median.