Introduction to Statistics

What is statistics?

• the study of static objects and its properties

• the analysis, interpretation, and presentation of data

• the mathematical study of shapes and sizes

• the study of ancient civilizations and their artifacts.

What is the mean?

• the most common value in the dataset

• the middle value when the data is arranged in ascending order

• the sum of all values in a dataset divided by the total number of values

• the values that appers most frequently in a dataset

Find the mean for this set of numbers?

1, 3, 4, 5, 6, 6, 7

• 5

• 32

• 4.57

• 7

What is the median?

• the most common value in the dataset

• the middle value when the data is arranged in ascending order

• the sum of all values in a dataset divided by the total number of values

• the values that appers most frequently in a dataset

Find the median for this set of numbers?

1, 3, 4, 5, 6, 6, 7

• 1

• 4

• 5

• 7

Find the median for this dataset

3,13,7,5,21,23,23,40,23,14,12,56,23,29

• 21

• 22

• 23

• 24

What is the mode?

• the most common value in the dataset

• the middle value when the data is arranged in ascending order

• the sum of all values in a dataset divided by the total number of values

• the values that appers most frequently in a dataset

Find the mode for this set of numbers?

1, 3, 4, 5, 6, 6, 7

• 6

• 4

• 5

• 7

Find the mode for this dataset

3,13,7,5,21,23,23,40,23,14,12,56,23,29

• 21

• 22

• 23

• 24

Given the dataset {1, 3, 3, 3, 4, 4, 6, 6, 6, 9}, the modes are 3 and 6. Having two modes in a dataset is called:

• unimodal

• bimodal

• multimodal

• trimodal