Answer:
Check attachment for solution 
Step-by-step explanation:
 
        
             
        
        
        
Answer:  a) Mean = 5, Median = 5
b) Mean = 15, Median = 5
c) Due to presence of outlier i.e. 99.
Step-by-step explanation:
Since we have given that
1,2,3,4,5,6,7,8,9
Here, n = 9 which is odd
So, Mean would be 

Median = 
If 9 is replaced by 99,
1,2,3,4,5,6,7,8,99
So, mean would be 

Median would be same as before i.e. 5
The mean is neither central nor typical for the data due to outlier i.e. 99 
Hence, a) Mean = 5, Median = 5
b) Mean = 15, Median = 5
c) Due to presence of outlier i.e. 99.
 
        
             
        
        
        
0° 42' 48.6". 
Conversion: d = int(.7135°) = 0°m = int((.7135° - 0°) × 60) = 42's = (.7135° - 0° - 42'/60) × 3600 = 48.6".7135°= 0° 42' 48.6"
How to convert decimal degrees to degrees,minutes,secondsOne degree (°) is equal to 60 minutes (') and equal to 3600 seconds ("):
1° = 60' = 3600"
The integer degrees (d) are equal to the integer part of the decimal degrees (dd):
d = integer(dd)
The minutes (m) are equal to the integer part of the decimal degrees (dd) minus integer degrees (d) times 60:
m = integer((dd - d) × 60)
The seconds (s) are equal to the decimal degrees (dd) minus integer degrees (d) minus minutes (m) divided by 60 times 3600:
s = (dd - d - m/60) × 3600
 
        
        
        
Any integer's sum and the reverse is equal to zero. You can add two positive integers the result will always be a positive sum, including two negative whole numbers dependable yields a negative aggregate. To discover the whole of a positive and a negative number, take the outright estimation of every number and after that subtract these qualities.
        
             
        
        
        
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