HELLO THIS IS A PPT ON DATA HANDLING AND PLEASE LIKE IT

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