1.3 Measure Of Center

Question 1

Define the following:

1.) Summation Notation
2.) Mean
3.) Population mean
4.) Sample mean

Answer 1

Question 2

Define Median and how to find it

Answer 2

~ the value of the middle term in a data set that has been ranked in increasing order.

1.) if n or N is odd, then the median is the middle term
2.) if n or N is even, then the median is the average of the two middle terms

Question 3

Define Mode

Answer 3

the value that occurs the most frequently

Question 4

Define Range

Answer 4

It is the difference between the maximum value and minimum value.

Question 5

Define Interquartile Range(IQR) and how to find it.

Answer 5

Question 6

How do we find outliers using the IQR?

Answer 6

Question 7

What is a Box-and-whisker plot?(boxplot)

Question 8

What is variance and standard deviation and how to find it?

Answer 8

variance in statistics refers to how much the values in a dataset differ from the average or the expected value. It measures the spread or variability of the data points.

Standard deviation is like a ruler that tells us how spread out or clustered the values in a dataset are. It gives us a sense of how much the individual data points differ from the average or expected value.