HISTOGRAM, Meaning of histogram
Histogram is a graphical representation of frequency distribution. It is made up of a set of rectangles that have their bases on the horizontal axis, i.e. X – axis, and their frequency on the vertical axis, Y – axis. They also have their rectangles at the centre on the class mark (i.e mid point) of each interval.
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WEED AND THEIR BOTANICAL NAMES
1. ENVIRONMENTAL FACTORS AFFECTING AGRICULTURAL PRODUCTION
2. DISEASES
3. 52. SOIL MICRO-ORGANISMS
4. ORGANIC MANURING
5. FARM YARD MANURE
6. HUMUS
7. COMPOST
8. CROP ROTATION
9. GRAZING AND OVER GRAZING
- IRRIGATION AND DRAINAGE
- IRRIGATION SYSTEMS
- ORGANIC MANURING
- FARM YARD MANURE
- HUMUS
- COMPOST
- CROP ROTATION
- IRRIGATION AND DRAINAGE
- IRRIGATION SYSTEMS
- INCUBATORS
- MILKING MACHINE
- SIMPLE FARM TOOLS
- AGRICULTURAL MECHANIZATION
- THE CONCEPT OF MECHANIZATION
- PROBLEMS OF MECHANIZATION
- SURVEYING AND PLANNING OF FARMSTEAD
- IMPORTANCE OF FARM SURVEY
- SURVEY EQUIPMENT
- PRINCIPLES OF FARM OUTLAY
- SUMMARY OF FARM SURVEYING
- CROP HUSBANDRY PRACTICES
HOW TO DRAW A HISTOGRAM
The areas of the rectangles are proportional to the class frequencies. In drawing a histogram, there is no gap or space between two bars, unlike the bar chart.
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EXAMPLE OF THE USE OF HISTOGRAM
A farmer harvested 60 tubers of yam for eight days. The number of yam harvested per day is shown in table 2.9. Draw a histogram to represent the information.
Table 2.9: Number of tubers of yam harvested in a farm.
| No. of days | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Tubers of yam | 4 | 12 | 7 | 20 | 2 | 9 | 1 | 5 |
