Q1) Calculate the mean from

x	Frequency
08	140
09	145
10	130
11	65
12	135

[ mean =9.854]

Q1) Calculate the variance from

x	Frequency
09	145
10	90
11	75
12	140
13	120

[ var =2.263]

Q1) Calculate the Standard Deviation from

x	Frequency
05	50
06	70
07	70
08	80
09	100

[ Standard Deviation =1.392]

Q2) Calculate the mean from

x	Frequency
09	85
10	150
11	90
12	135
13	135

[ mean =11.14]

Q2) Calculate the variance from

x	Frequency
05	60
06	125
07	145
08	115
09	125

[ var =1.675]

Q2) Calculate the Standard Deviation from

x	Frequency
09	150
10	115
11	135
12	135
13	75

[ Standard Deviation =1.356]

Q3) Calculate the mean from

x	Frequency
10	65
11	115
12	150
13	55
14	95

[ mean =12.00]

Q3) Calculate the variance from

x	Frequency
09	115
10	120
11	75
12	140
13	80

[ var =1.953]

Q3) Calculate the Standard Deviation from

x	Frequency
08	115
09	115
10	100
11	140
12	50

[ Standard Deviation =1.311]

Q4) Calculate the mean from

x	Frequency
09	80
10	115
11	110
12	55
13	70

[ mean =10.81]

Q4) Calculate the variance from

x	Frequency
06	75
07	100
08	105
09	70
10	80

[ var =1.835]

Q4) Calculate the Standard Deviation from

x	Frequency
06	130
07	65
08	60
09	95
10	70

[ Standard Deviation =1.497]

Q5) Calculate the mean from

x	Frequency
06	115
07	85
08	125
09	105
10	135

[ mean =8.106]

Q5) Calculate the variance from

x	Frequency
09	65
10	60
11	115
12	65
13	150

[ var =2.017]

Q5) Calculate the Standard Deviation from

x	Frequency
07	135
08	130
09	80
10	60
11	95

[ Standard Deviation =1.459]