Mr Daniels Maths
Ungrouped Data

Set 1

Set 2

Set 3

Q1) Calculate the mean from

xFrequency
08 140
09 145
10 50
11 150
12 80
[ mean =9.796]

Q1) Calculate the variance from

xFrequency
06 145
07 65
08 60
09 95
10 80
[ var =2.332]

Q1) Calculate the Standard Deviation from

xFrequency
05 130
06 70
07 60
08 150
09 85
[ Standard Deviation =1.477]

Q2) Calculate the mean from

xFrequency
09 105
10 75
11 70
12 145
13 125
[ mean =11.21]

Q2) Calculate the variance from

xFrequency
05 75
06 105
07 60
08 105
09 105
[ var =2.049]

Q2) Calculate the Standard Deviation from

xFrequency
05 150
06 135
07 80
08 65
09 55
[ Standard Deviation =1.347]

Q3) Calculate the mean from

xFrequency
10 145
11 80
12 60
13 105
14 55
[ mean =11.65]

Q3) Calculate the variance from

xFrequency
06 90
07 55
08 150
09 105
10 130
[ var =1.902]

Q3) Calculate the Standard Deviation from

xFrequency
08 75
09 135
10 140
11 145
12 75
[ Standard Deviation =1.242]

Q4) Calculate the mean from

xFrequency
06 140
07 150
08 70
09 110
10 60
[ mean =7.623]

Q4) Calculate the variance from

xFrequency
08 125
09 125
10 50
11 105
12 85
[ var =2.142]

Q4) Calculate the Standard Deviation from

xFrequency
06 105
07 55
08 100
09 130
10 130
[ Standard Deviation =1.451]

Q5) Calculate the mean from

xFrequency
06 75
07 50
08 120
09 80
10 150
[ mean =8.379]

Q5) Calculate the variance from

xFrequency
06 145
07 135
08 130
09 55
10 100
[ var =1.980]

Q5) Calculate the Standard Deviation from

xFrequency
09 90
10 55
11 65
12 140
13 85
[ Standard Deviation =1.424]