Q1) Calculate the mean from

x	Frequency
08	140
09	145
10	50
11	150
12	80

[ mean =9.796]

Q1) Calculate the variance from

x	Frequency
06	145
07	65
08	60
09	95
10	80

[ var =2.332]

Q1) Calculate the Standard Deviation from

x	Frequency
05	130
06	70
07	60
08	150
09	85

[ Standard Deviation =1.477]

Q2) Calculate the mean from

x	Frequency
09	105
10	75
11	70
12	145
13	125

[ mean =11.21]

Q2) Calculate the variance from

x	Frequency
05	75
06	105
07	60
08	105
09	105

[ var =2.049]

Q2) Calculate the Standard Deviation from

x	Frequency
05	150
06	135
07	80
08	65
09	55

[ Standard Deviation =1.347]

Q3) Calculate the mean from

x	Frequency
10	145
11	80
12	60
13	105
14	55

[ mean =11.65]

Q3) Calculate the variance from

x	Frequency
06	90
07	55
08	150
09	105
10	130

[ var =1.902]

Q3) Calculate the Standard Deviation from

x	Frequency
08	75
09	135
10	140
11	145
12	75

[ Standard Deviation =1.242]

Q4) Calculate the mean from

x	Frequency
06	140
07	150
08	70
09	110
10	60

[ mean =7.623]

Q4) Calculate the variance from

x	Frequency
08	125
09	125
10	50
11	105
12	85

[ var =2.142]

Q4) Calculate the Standard Deviation from

x	Frequency
06	105
07	55
08	100
09	130
10	130

[ Standard Deviation =1.451]

Q5) Calculate the mean from

x	Frequency
06	75
07	50
08	120
09	80
10	150

[ mean =8.379]

Q5) Calculate the variance from

x	Frequency
06	145
07	135
08	130
09	55
10	100

[ var =1.980]

Q5) Calculate the Standard Deviation from

x	Frequency
09	90
10	55
11	65
12	140
13	85

[ Standard Deviation =1.424]