Q1) Calculate the mean from

x	Frequency
08	140
09	120
10	95
11	150
12	65

[ mean =9.789]

Q1) Calculate the variance from

x	Frequency
10	80
11	145
12	100
13	140
14	80

[ var =1.697]

Q1) Calculate the Standard Deviation from

x	Frequency
06	130
07	125
08	125
09	140
10	85

[ Standard Deviation =1.358]

Q2) Calculate the mean from

x	Frequency
07	95
08	85
09	80
10	95
11	115

[ mean =9.106]

Q2) Calculate the variance from

x	Frequency
06	150
07	140
08	65
09	130
10	100

[ var =2.136]

Q2) Calculate the Standard Deviation from

x	Frequency
07	115
08	90
09	85
10	60
11	55

[ Standard Deviation =1.383]

Q3) Calculate the mean from

x	Frequency
08	60
09	70
10	110
11	90
12	95

[ mean =10.21]

Q3) Calculate the variance from

x	Frequency
05	70
06	125
07	150
08	110
09	85

[ var =1.583]

Q3) Calculate the Standard Deviation from

x	Frequency
07	50
08	110
09	85
10	125
11	135

[ Standard Deviation =1.340]

Q4) Calculate the mean from

x	Frequency
10	95
11	85
12	140
13	100
14	140

[ mean =12.19]

Q4) Calculate the variance from

x	Frequency
05	145
06	90
07	90
08	60
09	145

[ var =2.468]

Q4) Calculate the Standard Deviation from

x	Frequency
05	55
06	120
07	125
08	75
09	65

[ Standard Deviation =1.237]

Q5) Calculate the mean from

x	Frequency
10	100
11	145
12	55
13	80
14	55

[ mean =11.64]

Q5) Calculate the variance from

x	Frequency
09	70
10	75
11	100
12	120
13	140

[ var =1.915]

Q5) Calculate the Standard Deviation from

x	Frequency
05	130
06	60
07	50
08	120
09	125

[ Standard Deviation =1.570]