Answer:
It can be either one, if you prefer reading you can ask questions through text, if you prefer talking verbally then I'd say over video is best.
Answer: The answer is in the attachment below!
the first one is -6, 8 second is 0,8!
Mean: [45+65+30+50+20+30]/6 = 40.2
Median
First order the number {20, 30, 30,45, 50, 50}
The median is the average of the two values in the middle of the list: (30+45)/2 = 37.5
Mode: 30 and 50 (they are repeated the same number of times)