Statistics

Question 1

Answer 1

Question 2

What is the formula for average (Mean)

Answer 2

Question 3

Answer 3

Question 4

A. What’s the purpose of standard deviation

B. Can it be negative

C. When can standard deviation be 0

Answer 4

A. Standard deviation allows us to see how far apart individual values are from the mean

B. Standard deviation cannot be negative it must be 0 or greater

C. Standard deviation can only be 0, when all numbers on the list are the same i.e (7,7,7,7)

Question 5

Answer 5

Question 6

How can you :

• Increase Standard deviation
• Decrease Standard deviation

Answer 6

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

In a consecutive list, in order to find the value of a odd or even consecutive list, what would the increment be when finding (no of terms)

Answer 13

The increment for odd and even numbers must only be 2 only when it specifically tells the consecutive list is odd or even

Question 14

What must the increment for a normal consecutive list be when you are finding the sum of list, and using the no of total terms formula in finding the increment

Answer 14

Increment must be 1 only unless stated a different number.

(Big - small)/1) - 1 = no of total terms in a normal consecutive list

Question 15

How would you calculate standard deviation through formula?

Answer 15

Square the deviations first then do the rest