What is Histogram? 5 Steps to create it effectively

What is a histogram?

A histogram is a plot with the help of which we can know about the distribution pattern of collected data. When we plot the data in histogram it shows the data in bins (a particular range of data).

With the help of which we can understand the where is our collected data is getting distributed.

Histogram represent the data in mainly normal, non-normal distribution.

By plotting the data in histogram we can identify the outliers, skewness present in data.

It is used to plot continuous data

Steps to draw Histogram:

Step-1

Collect the data as per requirement

Collected 30 parts data from a process.

111,115,117,121,126,128,134,135,134,136,139,142,143,144,144,145,152,151,151,156,154,167,164,164,163, 174,176,184,189,194.

Step-2

Arrange the data in range groups

111,115,117,121,126,128,134,135,134,136,139,142,143,144,144,145,152,151,151,156,154,167,164,164,163, 174,176,184,189,194.

Step 3

Check the range of data

100~200

Step-4

Now define the interval with respect to collected data

110-120

120-130

130-140

140-150

150-160

160-170

170-180

180-190

190-200

 

Step-5

Calculate the frequency of data with respect to identified intervals

Bin

Frequency

110-120

3

120-130

3

130-140

5

140-150

5

150-160

5

160-170

4

170-180

2

180-190

2

190-200

1

Step-5

Arrange the data in identified intervals

Bin interval

Frequency of data

Data in Bin

110-120

3

111, 115,117

120-130

3

121,126,128

130-140

5

134,135,134,136,139

140-150

5

142,143,144,144,145

150-160

5

152,151,151,156,154

160-170

4

167,164,164,163

170-180

2

174,176

180-190

2

184,189

190-200

1

194

Step-6

Select the graph and put data in graph

 

What is Histogram? Steps to create it

 

 

 

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