statistics

1)
    234
    4600
    860
    980
    5020
    1060
    780
    840
    860
    1060
    1570
    1170
    790
    930
    550
    
2)
Survey
3)
Surveys are the most common and simple method to collect the data.
4)
True representative sample of population when the population is 320, is 30
5)
Random sampling
Reason behind to choose the random sampling method is that in this method samples are chooses strictly by chance.
6)
Mean = Sum of all observations / Total observations
= 21,304 / 15 = 1420.27
Median =...