Mr Daniels Maths

Mr Daniels Maths

Ungrouped Data

Easy

Medium

Difficult

Q1) Calculate the mean from

x	Frequency
09	95
10	100
11	65
12	95
13	90

mean =10.97

Q1) Calculate the variance from

x	Frequency
09	150
10	100
11	115
12	75
13	85

var =2.037

Q1) Calculate the Standard Deviation from

x	Frequency
09	75
10	130
11	100
12	75
13	130

Standard Deviation =1.414

Q2) Calculate the mean from

x	Frequency
05	150
06	85
07	145
08	60
09	110

mean =6.809

Q2) Calculate the variance from

x	Frequency
07	95
08	125
09	140
10	95
11	90

var =1.756

Q2) Calculate the Standard Deviation from

x	Frequency
07	105
08	55
09	150
10	75
11	115

Standard Deviation =1.419

Q3) Calculate the mean from

x	Frequency
09	55
10	145
11	150
12	70
13	105

mean =11.05

Q3) Calculate the variance from

x	Frequency
06	85
07	150
08	75
09	55
10	85

var =1.922

Q3) Calculate the Standard Deviation from

x	Frequency
06	105
07	120
08	80
09	130
10	140

Standard Deviation =1.456

Q4) Calculate the mean from

x	Frequency
10	140
11	130
12	65
13	110
14	75

mean =11.71

Q4) Calculate the variance from

x	Frequency
05	105
06	75
07	110
08	135
09	125

var =2.021

Q4) Calculate the Standard Deviation from

x	Frequency
09	140
10	135
11	115
12	60
13	70

Standard Deviation =1.349

Q5) Calculate the mean from

x	Frequency
06	100
07	85
08	75
09	55
10	100

mean =7.928

Q5) Calculate the variance from

x	Frequency
08	110
09	125
10	85
11	135
12	145

var =2.116

Q5) Calculate the Standard Deviation from

x	Frequency
10	75
11	110
12	130
13	75
14	135

Standard Deviation =1.388