Answer:
Generally an unbiased statistic is preferred over a biased statistic. This is because there is a long run tendency of the biased statistic to under/over estimate the true value of the population parameter. Unbiasedness does not guarantee that an estimator will be close to the population parameter.
Step-by-step explanation:
 
        
             
        
        
        
A triangles is 180 degrees. 100+50=150.
180-150=30 
X=30
        
                    
             
        
        
        
Is it more difficult to run up a ramp with a slope of 1/5 or a ramp with a slope of 5? Explain.  
a dlope of 1/5 is walkable; a slope of 5 is not without climbing gear.
 
        
             
        
        
        
38 (average) - 29.777 (this year) = 8.223 inches less this year than the average year.
        
             
        
        
        
Consider the attached ellipse. Let the sun be at the right focus. Then perihelion is at right vertex on the x-axis and aphelion is at the left vertex on the x-axis.
The distances:
- from perihelion to the sun in terms of ellipse is a-c;
- from aphelion to the sun in terms of ellipse is a+c.
Then 

Add these two equations:
 
 
and subtract first equation from the second:
 
 
Note that  thus
 thus

The equation for the planet's orbit is
