Btec: statistics Grouped Data

## Difficult

Q1) Calculate the mean from

_____x_____| Frequency
00 < x ≤ 10 | 130
10 < x ≤ 30 | 200
30 < x ≤ 40 | 315
40 < x ≤ 50 | 225
50 < x ≤ 60 | 300

Q1) Calculate the variance from

_____x_____| Frequency
00 < x ≤ 10 | 140
10 < x ≤ 30 | 160
30 < x ≤ 50 | 315
50 < x ≤ 60 | 420
60 < x ≤ 70 | 110

Q1) Calculate the Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 55
10 < x ≤ 30 | 120
30 < x ≤ 40 | 450
40 < x ≤ 50 | 330
50 < x ≤ 70 | 260

Q2) Calculate the mean from

_____x_____| Frequency
00 < x ≤ 10 | 140
10 < x ≤ 30 | 130
30 < x ≤ 40 | 195
40 < x ≤ 60 | 330
60 < x ≤ 70 | 300

Q2) Calculate the variance from

_____x_____| Frequency
00 < x ≤ 10 | 90
10 < x ≤ 20 | 130
20 < x ≤ 40 | 210
40 < x ≤ 50 | 255
50 < x ≤ 70 | 250

Q2) Calculate the Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 105
10 < x ≤ 30 | 290
30 < x ≤ 40 | 285
40 < x ≤ 50 | 300
50 < x ≤ 60 | 120

Q3) Calculate the mean from

_____x_____| Frequency
00 < x ≤ 10 | 145
10 < x ≤ 30 | 280
30 < x ≤ 50 | 390
50 < x ≤ 70 | 285
70 < x ≤ 80 | 290

Q3) Calculate the variance from

_____x_____| Frequency
00 < x ≤ 10 | 60
10 < x ≤ 20 | 230
20 < x ≤ 40 | 435
40 < x ≤ 50 | 360
50 < x ≤ 60 | 100

Q3) Calculate the Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 140
10 < x ≤ 20 | 220
20 < x ≤ 40 | 270
40 < x ≤ 60 | 390
60 < x ≤ 70 | 260

Q4) Calculate the mean from

_____x_____| Frequency
00 < x ≤ 10 | 125
10 < x ≤ 30 | 140
30 < x ≤ 40 | 450
40 < x ≤ 50 | 210
50 < x ≤ 70 | 220

Q4) Calculate the variance from

_____x_____| Frequency
00 < x ≤ 10 | 140
10 < x ≤ 30 | 150
30 < x ≤ 40 | 300
40 < x ≤ 60 | 300
60 < x ≤ 80 | 120

Q4) Calculate the Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 150
10 < x ≤ 20 | 150
20 < x ≤ 40 | 330
40 < x ≤ 60 | 225
60 < x ≤ 80 | 130

Q5) Calculate the mean from

_____x_____| Frequency
00 < x ≤ 10 | 145
10 < x ≤ 20 | 180
20 < x ≤ 30 | 405
30 < x ≤ 50 | 435
50 < x ≤ 60 | 240

Q5) Calculate the variance from

_____x_____| Frequency
00 < x ≤ 10 | 60
10 < x ≤ 30 | 210
30 < x ≤ 50 | 420
50 < x ≤ 70 | 255
70 < x ≤ 80 | 240

Q5) Calculate the Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 125
10 < x ≤ 20 | 190
20 < x ≤ 30 | 270
30 < x ≤ 40 | 210
40 < x ≤ 50 | 200