The standard deviation is 1.98. Option A is correct.
The standard deviation formula is given as
where:
- SS is the sum of squares  = 200
- n is the sample size = 51
Substitute the given parameters into the formula to have:

Hence the standard deviation is 1.98
Learn more on standard deviation here: brainly.com/question/12402189
 
        
             
        
        
        
B. You will have to divide the lengths by 6 to get the answer
        
                    
             
        
        
        
M is a factor of n so the answer is d
        
                    
             
        
        
        
Answer:
364$
Step-by-step explanation:
you multiply 26 times 13 which equals 364
 
        
             
        
        
        
Answer:
146°
Step-by-step explanation:
Points A and B are the endpoints of an arc of a circle. Chords are drawn from the two endpoints to a third point, C, on the circle. Given m arch AB=64° and ⦣ABC=73°, m ⦣ABC=__ ° and m arch AC=__ °.
Solution:
Given that:
arc AB = 64° and ⦣ABC=73°
The Central Angle Theorem states that the central angle from two chosen points A and B on the circle is always twice the inscribed angle from those two points. The inscribed angle is any point along the outer arc AB and the two points A and B.
Therefore arc AC is the central angle of ⦣ABC. Using the central angle theorem gives:
arc AC = 2 * ⦣ABC
substituting:
arc AC = 2 * 73
arc AC = 146°