Q1) Calculate the mean from

x	Frequency
07	85
08	105
09	70
10	60
11	100

[ mean =8.964]

Q1) Calculate the variance from

x	Frequency
05	85
06	135
07	55
08	105
09	95

[ var =2.021]

Q1) Calculate the Standard Deviation from

x	Frequency
07	90
08	105
09	115
10	140
11	105

[ Standard Deviation =1.354]

Q2) Calculate the mean from

x	Frequency
10	85
11	125
12	95
13	145
14	115

[ mean =12.14]

Q2) Calculate the variance from

x	Frequency
09	90
10	150
11	55
12	80
13	125

[ var =2.180]

Q2) Calculate the Standard Deviation from

x	Frequency
09	150
10	105
11	120
12	115
13	85

[ Standard Deviation =1.405]

Q3) Calculate the mean from

x	Frequency
10	80
11	145
12	60
13	50
14	100

[ mean =11.87]

Q3) Calculate the variance from

x	Frequency
05	130
06	115
07	60
08	115
09	60

[ var =1.977]

Q3) Calculate the Standard Deviation from

x	Frequency
08	135
09	80
10	85
11	95
12	140

[ Standard Deviation =1.543]

Q4) Calculate the mean from

x	Frequency
06	130
07	75
08	50
09	95
10	115

[ mean =7.978]

Q4) Calculate the variance from

x	Frequency
08	130
09	100
10	65
11	140
12	105

[ var =2.185]

Q4) Calculate the Standard Deviation from

x	Frequency
10	60
11	120
12	140
13	110
14	65

[ Standard Deviation =1.214]

Q5) Calculate the mean from

x	Frequency
10	120
11	100
12	60
13	135
14	125

[ mean =12.08]

Q5) Calculate the variance from

x	Frequency
05	145
06	70
07	75
08	120
09	75

[ var =2.172]

Q5) Calculate the Standard Deviation from

x	Frequency
08	50
09	65
10	55
11	50
12	55

[ Standard Deviation =1.395]