Btec: Assignment 2

Easy

Medium

Difficult

Q1) Calculate the Mean, Variance and Standard Deviation from

_x_| Frequency
05 | 140
06 | 100
07 | 50
08 | 140
09 | 95

Q1) Calculate the Mean, Variance and Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 50
10 < x ≤ 20 | 140
20 < x ≤ 30 | 165
30 < x ≤ 40 | 165
40 < x ≤ 50 | 190

Q1) (2 + 2i) x (9 -8i) =
Q2) Calculate the Mean, Variance and Standard Deviation from

_x_| Frequency
07 | 70
08 | 140
09 | 55
10 | 55
11 | 85

Q2) Calculate the Mean, Variance and Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 115
10 < x ≤ 30 | 100
30 < x ≤ 40 | 150
40 < x ≤ 60 | 255
60 < x ≤ 80 | 210

Q2) (13 -2i) / (15 + 2i) =
Q3) Calculate the Mean, Variance and Standard Deviation from

_x_| Frequency
06 | 55
07 | 135
08 | 110
09 | 75
10 | 110

Q3) Calculate the Mean, Variance and Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 105
10 < x ≤ 30 | 120
30 < x ≤ 40 | 270
40 < x ≤ 50 | 375
50 < x ≤ 70 | 270

Q3) (6 + 10i) x (2 -8i) =
Q4) Calculate the Mean, Variance and Standard Deviation from

_x_| Frequency
10 | 110
11 | 135
12 | 140
13 | 50
14 | 85

Q4) Calculate the Mean, Variance and Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 140
10 < x ≤ 30 | 260
30 < x ≤ 50 | 240
50 < x ≤ 70 | 360
70 < x ≤ 80 | 260

Q4) (13 + 7i) / (11 + 3i) =
Q5) Calculate the Mean, Variance and Standard Deviation from

_x_| Frequency
06 | 130
07 | 140
08 | 120
09 | 75
10 | 145

Q5) Calculate the Mean, Variance and Standard Deviation from

_____x_____| Frequency
00 < x ≤ 10 | 70
10 < x ≤ 30 | 230
30 < x ≤ 40 | 165
40 < x ≤ 50 | 300
50 < x ≤ 60 | 190

Q5) (14 -3i) x (18 + 4i) =