Introduction to statistics

Statistics branch that state facts and proven outcomes from a population

A ​ ​ (a)   is a representative portion of the population from which information is gathered.

• sample
• central tendency measure
• measure of dispersion
• quantitative variable
• qualitative variable
• population

The study and practice of collecting and analyzing data

• Statistics

• Inferential Statistics

• Descriptive Statistics

Average is also called...

• Mean

• Median

• Mode

Join each with its corresponding category

Groups:

(a) Measures of central tendency

,

(b) Measures of dispersion

• Range

• Mean

• Mode

• Median

• Variance

• Standard deviation

Mean of the following dataset: [6, 5, 7, 8, 4]

• 6

• 8

• 2

• 5

Qualitative variables are variables that CAN be expressed with numbers

• True

• False

Organize the following in their corresponding category

Groups:

(a) Discrete variables

,

(b) Continuos variable

• Number of children in a family

• Number of cars owned by a person

• Height of a person in centimeters
• Temperature in degrees Celsius
• Number of rooms in a house

• Volume of water in a container in liters
• Speed of a moving object in meters per second
• Distance traveled by a car in kilometers
• Number of students in a classroom

• Number of books on a shelf

• Number of pets in a household

• Weight of a person in kilograms
• Time taken to complete a task in minutes
• Number of days in a week

A poll of customer satisfaction in a restaurant uses the system in the picture, which of the following variables does the poll use?

• Discrete

• Continuous

• Nominal

• Ordinal

"Two sets of data can have the same mean but they can be totally different"

• True

• False