Q1) Calculate the mean from

x	Frequency
05	90
06	150
07	85
08	95
09	115

[ mean =6.991]

Q1) Calculate the variance from

x	Frequency
08	75
09	145
10	75
11	100
12	125

[ var =1.998]

Q1) Calculate the Standard Deviation from

x	Frequency
06	75
07	65
08	145
09	150
10	115

[ Standard Deviation =1.297]

Q2) Calculate the mean from

x	Frequency
07	105
08	145
09	50
10	145
11	140

[ mean =9.120]

Q2) Calculate the variance from

x	Frequency
09	100
10	50
11	115
12	95
13	115

[ var =2.091]

Q2) Calculate the Standard Deviation from

x	Frequency
05	60
06	90
07	145
08	130
09	120

[ Standard Deviation =1.280]

Q3) Calculate the mean from

x	Frequency
10	115
11	90
12	90
13	150
14	125

[ mean =12.14]

Q3) Calculate the variance from

x	Frequency
08	115
09	115
10	145
11	145
12	140

[ var =1.925]

Q3) Calculate the Standard Deviation from

x	Frequency
10	135
11	130
12	105
13	130
14	115

[ Standard Deviation =1.430]

Q4) Calculate the mean from

x	Frequency
07	145
08	100
09	100
10	100
11	60

[ mean =8.663]

Q4) Calculate the variance from

x	Frequency
10	75
11	100
12	65
13	80
14	55

[ var =1.841]

Q4) Calculate the Standard Deviation from

x	Frequency
08	110
09	85
10	80
11	130
12	85

[ Standard Deviation =1.425]

Q5) Calculate the mean from

x	Frequency
07	55
08	70
09	65
10	80
11	140

[ mean =9.439]

Q5) Calculate the variance from

x	Frequency
08	55
09	115
10	140
11	95
12	115

[ var =1.675]

Q5) Calculate the Standard Deviation from

x	Frequency
05	95
06	65
07	80
08	120
09	105

[ Standard Deviation =1.446]