Summarizing Data Collected From A Sample

Question 1

What are continuous variables?

Answer 1

They take on a unlimited number of distinct responses between a theoretical minimum value and maximum value.

Question 2

What is sample mean, and how do we obtain it?

Answer 2

It is commented by summing all of the values and dividing by the sample size.
For example:
62+63+64+67+70+72+76+77+81+81/ 10

Question 3

When reporting summary statistics for a continuous variable, what is the convention in reporting decimal places on numbers?

Answer 3

Report one more decimal place than the number of decimal places measured

Question 4

What is a sample median?

Answer 4

Is the middle value in the ORDERED data set, or the value that separates the top 50% from the bottom 50%. The mean is unaffected by extreme or outlying variables

Question 5

I’m the case of having either very small or very large values relative to others, is a median or mean preferred?

Answer 5

Median

Question 6

What is the mode?

Answer 6

It is defended as the most frequent value

Question 7

The difference between the maximum value and the minimum value is referred to as?

Answer 7

The sample range —> the sample range can be affected by extreme values and thus it must be interrupted with caution