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Y Bar Statistics

Introduction to y-bar statistics:

Let us see about y-bar statistics. In statistics the graphs are used torepresent the data.  The statistics bar graph is called as y-bar graph.In y-bar statistics the bars are parallel to the y-axis. Generally, thegraphs are supported to symbolize the business data, temperature, and frequency. Generally, the graphs are classified by five types.


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Examples of y-bar statistics:


Let us see some examples of y-bar statistics.

Example 1:

Solve the y-bar statistics for the following data.

Month

visitors

Jan

67

Feb

91

March

96

April

37

May

46

June

61

July

83

Aug

71

Sep

92

Oct

73

Nov

61

Dec

84

Solution:

         The y-bar statistics shows the months and the visitors. The months are specified in x-axis and the visitors are specified in y-axis.

 y-bargraph

Thus the y-bar statistics graph is solved.

Example 2:

Solve the y-bar statistics for the following data.

Experience

Income

5years

$ 24,000

10 years

$27,000

15 years

$35,000

20 years

$42,000

25 years

$49,000

30 years

$ 52,000

40 years

$ 59,000

Solution:

         The y-bar statistics shows the experience and the income. The experience is specified in x-axis and the income is specified in y-axis.

y-bargraph

 Thus the y-bar statistics graph is solved.

Example 3:

Solve the y-bar statistics for the following data.

Month

Sale rate of laptop

Jan

5%

Feb

10%

March

2%

April

7%

May

8%

June

3%

July

1%

Aug

6%

Sep

9%

Oct

11%

Nov

20%

Dec

16%

Solution:

         The y-bar statistics shows the months and the sales rate of laptop. Themonths are specified in x-axis and the sale rate of laptop is specifiedin y-axis.

 y-bargraph

Thus the y-bar statistics graph is solved.


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One more example of y-bar statistics:


Solve the y-bar statistics for the following data.

Item

P

Q

R

S

T

U

V

W

X

Quality

25%

78%

77%

88%

90%

37%

45%

65%

76%

Solution:

         The y-bar statistics shows the items and the quality. The items are specified in x-axis and the quality is specified in y-axis.

 y-bargraph

Thus the y-bar statistics graph is solved.