Q1) Calculate the mean from

x	Frequency
09	110
10	60
11	105
12	115
13	50

[ mean =10.85]

Q1) Calculate the variance from

x	Frequency
06	85
07	50
08	100
09	60
10	65

[ var =1.965]

Q1) Calculate the Standard Deviation from

x	Frequency
09	140
10	100
11	60
12	80
13	115

[ Standard Deviation =1.551]

Q2) Calculate the mean from

x	Frequency
07	115
08	105
09	140
10	115
11	85

[ mean =8.911]

Q2) Calculate the variance from

x	Frequency
06	120
07	145
08	60
09	105
10	115

[ var =2.175]

Q2) Calculate the Standard Deviation from

x	Frequency
05	55
06	55
07	140
08	140
09	130

[ Standard Deviation =1.262]

Q3) Calculate the mean from

x	Frequency
08	60
09	100
10	140
11	150
12	130

[ mean =10.33]

Q3) Calculate the variance from

x	Frequency
05	130
06	145
07	65
08	140
09	90

[ var =2.022]

Q3) Calculate the Standard Deviation from

x	Frequency
09	55
10	55
11	135
12	60
13	65

[ Standard Deviation =1.266]

Q4) Calculate the mean from

x	Frequency
09	65
10	100
11	65
12	110
13	105

[ mean =11.20]

Q4) Calculate the variance from

x	Frequency
05	135
06	150
07	70
08	75
09	55

[ var =1.796]

Q4) Calculate the Standard Deviation from

x	Frequency
06	135
07	135
08	65
09	105
10	80

[ Standard Deviation =1.429]

Q5) Calculate the mean from

x	Frequency
09	100
10	145
11	65
12	95
13	95

[ mean =10.88]

Q5) Calculate the variance from

x	Frequency
07	150
08	85
09	125
10	130
11	75

[ var =1.939]

Q5) Calculate the Standard Deviation from

x	Frequency
07	90
08	90
09	55
10	100
11	105

[ Standard Deviation =1.482]