Statistical Analysis Emergency Lesson

Statistical Analysis

Emergency Lesson

Vocabulary Overview

• Quantitative Data: Data that can be defined numerically through counting or measuring

• Categorical Data: Data that describes attributes or objects but does not contain numbers 

• NOTE: Values like zipcodes that are numbers but CANNOT be counted or measured are CATEGORICAL

PRACTICE TIME!

Tell me if the following are categorical or quantitative!

Multiple Choice

The different colors of crayons found in a crayola crayon box

• categorical

• Quantitative

The different colors of crayons found in a crayola crayon box

This is an example of categorical data, as colors can be grouped into categories, but cannot be represented numerically.

Multiple Choice

The temperature outside

• categorical

• quantitative

The Temperature Outside

Is an example of QUANTITATIVE data! Temperature is described by a numberical value (75 degrees) and can be MEASURED!

The number of hot dogs Joey Chestnut ate at the hot dog eating contest is an example of....

Quantative data! The key word here is NUMBER. If the number of something is being measured, it is always quantitative.

Multiple Select

Which of the following are examples of categorical data? (Select all that apply)

• The leaves are brown

• The tree is 10m tall

• There are 20 branches

• The bark is thick

• The roots are deep

So which were categorical?

• The leaves are brown (colors are always categorical)

• The bark is thick (adjectives are categorical)

• The roots are deep (if they told us HOW deep it would be quantitative. But they dont, so its categorical)

Multiple Select

Which of the following are quantitative data

• The number of baseballs

• The distance to center field

• The color of the infield

• The name of the home team

• The seat capacity at the stadium

So which were quantitative?

• The NUMBER of baseballs (numbers are always quantitative)

• The DISTANCE to center field (distance is measurable, making it quantitative)

• The SEAT CAPACITY of the stadium (how many people can sit at the stadium? Sounds like that will be a number!)
  
  

Poll

One a scale of 1 to 5, How well do you understand qualitative and quantitative data?

• 1 (IM SO LOST)

• 2

• 3

• 4

• 5 (I GOT THIS!)

Identifying the individual

• The individual is defined as the object being described by the data.

• In the example "Baseball players are ranked from best to worst by their averages" The individual is the baseball players average.

• In the example "John is comparing the price of skateboards at the shop" The individual is the price of the skateboards.

Multiple Choice

"Teachers must meet with students who miss at least 3 classes" What is the individual

• The teacher

• The student

• The classes

"Teachers must meet with students who miss at least 3 classes" What is the individual

The individual in this case is the student. As the data describes the students who miss at least 3 classes.

Open Ended

A parking control officer records the manufacturer of every 5th car in the college parking lot in order to guess the most common manufacturer. What is the individual?

A parking control officer records the manufacturer of every 5th car in the college parking lot in order to guess the most common manufacturer.

The individuals are the cars in the parking lot. As the manufacturer of those cars is the data that is being collected.

A biologist wants to estimate the average height of a plant that is given a new plant food.

• The individual is the plant that is given new food

• The height of the plant is what is being measured.

Multiple Select

A doctor wants to see if a new treatment for cancer extends the life expectancy of a patient versus the old treatment. She gives one group of 25 cancer patients the new treatment and another group of 25

25 the old treatment. Identify the individuals (there's more than one)

• The doctor

• The patients getting the new treatment

• The patients getting the old treatment

• The life expectancy of the patient

A doctor wants to see if a new treatment for cancer extends the life expectancy of a patient versus the old treatment. She gives one group of 25 cancer patients the new treatment and another group of 25 the old treatment.

• Both the group given the new treatment and the group given the old treatment are individuals

• The life expectancy is the variable being determined, but is not the OBJECT that is being described by that data.

Poll

On a scale of 1 to 5. How well do you understand what the individual of a data set is

• 1. (IM SO LOST)
• 2

• 3

• 4

• 5 ( I GOT THIS!)