Mr Daniels Maths
Ungrouped Data

Set 1

Set 2

Set 3

Q1) Calculate the mean from

xFrequency
09 135
10 75
11 80
12 90
13 105
[ mean =10.91]

Q1) Calculate the variance from

xFrequency
06 125
07 150
08 80
09 145
10 65
[ var =1.818]

Q1) Calculate the Standard Deviation from

xFrequency
10 65
11 90
12 105
13 50
14 70
[ Standard Deviation =1.335]

Q2) Calculate the mean from

xFrequency
10 135
11 105
12 65
13 120
14 55
[ mean =11.70]

Q2) Calculate the variance from

xFrequency
10 130
11 140
12 110
13 140
14 140
[ var =2.060]

Q2) Calculate the Standard Deviation from

xFrequency
08 140
09 75
10 110
11 60
12 115
[ Standard Deviation =1.514]

Q3) Calculate the mean from

xFrequency
05 70
06 125
07 70
08 65
09 50
[ mean =6.737]

Q3) Calculate the variance from

xFrequency
08 80
09 95
10 105
11 80
12 110
[ var =1.980]

Q3) Calculate the Standard Deviation from

xFrequency
05 90
06 95
07 140
08 105
09 115
[ Standard Deviation =1.364]

Q4) Calculate the mean from

xFrequency
09 120
10 65
11 145
12 70
13 55
[ mean =10.73]

Q4) Calculate the variance from

xFrequency
06 120
07 80
08 55
09 95
10 105
[ var =2.362]

Q4) Calculate the Standard Deviation from

xFrequency
06 85
07 95
08 105
09 60
10 75
[ Standard Deviation =1.370]

Q5) Calculate the mean from

xFrequency
07 130
08 140
09 80
10 145
11 85
[ mean =8.853]

Q5) Calculate the variance from

xFrequency
05 80
06 100
07 145
08 70
09 60
[ var =1.581]

Q5) Calculate the Standard Deviation from

xFrequency
05 130
06 55
07 80
08 135
09 55
[ Standard Deviation =1.421]