Ch3 data handling
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This document discusses various methods of data handling and representation. It defines bar graphs, pie charts, and pictographs as visual ways to represent numerical data using bars, circles, or pictures. It also discusses tally marks and telegraphs as methods for counting frequencies. The document then defines common statistical measures like mean, median, mode, and range that are used to summarize and analyze data.
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data handling
This document discusses various methods of data handling and representation. It defines bar graphs, pie charts, and pictographs as common ways to visually represent data using bars, circles, or pictures. It also discusses tally marks, which involve using diagonal lines to count frequencies. The document then explains key statistical concepts like mean, median, mode, and range that are used to summarize and analyze data.
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Bar chart
done by : ( ABCD'S &G )
alaa ba-jafar
abrar alshahranii
sahab filfilan
nada alharbi
shahd rajab
Ghadeer suwaimil
I hope that you enjoy and you benefit❤
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Bar chart
done by : ( ABCD'S &G )
alaa ba-jafar
abrar alshahranii
sahab filfilan
nada alharbi
shahd rajab
Ghadeer suwaimil
I hope that you enjoy and you benefit❤
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Ch3 data handling
- 1. CH3- DATA HANDLING MADE BY- DAKSH BHARGAVA
- 2. WHAT IS DATA HANDLING? • Data handling is the way in which Data can be represented graphically to give a clear idea of what it represents. It is easier to interpret and organize data using pictorial representation. • Data handling includes bar graph, pictograph and tally marks.
- 3. WHAT IS A BAR GRAPH • It is the way of representing data visually. Bars are of uniform width and can be drawn horizontally or vertically with equal spacing between them. The length of each bar represents the given number frequency.
- 4. WHAT IS A PIE CHART • These are called circle graphs.A circle graph shows the relationship between a whole and its parts. Here, the whole circle is divided into sectors. The size of each sector is proportional to the activity or information it represents.
- 5. WHAT IS A PICTOGRAPH • The representation of an information through pictures is called a pictograph. Pictographs use relative sizes or repetitions of the same icon, picture, or symbol to show comparison. Also called pictogram, pictorial chart, pictorial graph, or picture graph.
- 6. WHAT IS TELEGRAPH • A method of counting frequencies, according to some classification, in a set of data. For ease of counting, every fifth observation is represented by a diagonal line crossing the previous four to make a five-barred gate. Tally charts are often used with grouped observations.
- 7. TYPES OF BAR GRAPH • Stacked bar graphs • Vertical bar graphs • Horizontal bar graphs • Comparing several places or items • Dot graphs
- 8. MEAN • Mean= Sum of observations/Number of observations • Mean is the most common representative value of a data. It values between the maximum and minimum observation of a data.
- 9. MEDIAN • Median=Middle of the data • Median refers to the value which lies in the middle of the data when data is arranged in an increasing or decreasing order.
- 10. MODE • Mode=Number came most • Mode is another form of central tendency or representative value. The mode of a set of observations is the observation that occurs most often.
- 11. RANGE • Range = Highest value – lowest value • Range is another representative value of the data. Range is defined as the difference between the highest and the lowest observation.
- 12. THANK YOU