Numerical Data
What is discrete numerical data?
Data that can only take limited or specific values, often counted in whole numbers.
What is nominal categorical data?
Nominal categorical data is data that can be categorized into groups that do not have a specific order. Examples include colors, names, or types of animals.
Name one type of graph you can use to display nominal categorical data.
column graph
What is an interpretation
It is what we can learn or understand from the data
Sarah wants to know her classmates' favorite ice cream flavors. She asks each classmate to choose from chocolate, vanilla, or strawberry. What type of data is Sarah collecting?
Nominal categorical data.
Give an example of discrete numerical data.
The number of students in a class.
What is ordinal categorical data?
Ordinal categorical data is data that can be categorized into groups that have a specific order or ranking. Examples include grades (A, B, C) or levels of satisfaction (satisfied, neutral, dissatisfied).
Name one type of graph you can use to display continuous numerical data.
Line graph
Does a table need a title
Yes
John is conducting a survey to find out how many hours his friends spend on homework each week. He asks, "How many hours do you spend on homework each week?" What type of data is John collecting?
Discrete numerical data.
How can you collect numerical data through a survey?
By asking questions that require a numerical response, such as "How many books did you read this month?"
Give an example of nominal categorical data.
An example of nominal categorical data is the different types of fruits, such as apples, bananas, and oranges.
What is a many to one scale?
What does it mean if a line in a line graph increases?
it means the what is measured increased
Emily wants to refine her survey question about favorite school subjects. Her original question is, "What is your favourite subject?" How can she refine this question to collect ordinal data?
She can ask, "Rank the following subjects from most to least favourite." On a scale of 1 -5 rate your subjects"
What is the difference between discrete and continuous numerical data?
Discrete data can only take specific values, while continuous data can take any value within a range.
Give an example of ordinal categorical data.
An example of ordinal categorical data is the ranking of a race, such as 1st place, 2nd place, and 3rd place.
Why is it important to choose the right scale for a graph?
To accurately represent the data and make it easy to interpret.
How can you determine the total number of data values in a column graph?
By adding up the values represented by each column.
A teacher observes the number of times students raise their hands during a lesson. She records the data as 5, 3, 7, 2, and 4. What type of data is this?
Discrete numerical data.
Describe a situation where you would use continuous numerical data
Measuring - temperature/height/weight
When asking questions for categorical data, how would you record the information
In a tally table, with tallys.
Explain how to choose an appropriate graph to represent data.
By considering the type of data and the best way to visualize it for clarity and understanding.
What is the first step in interpreting data from a table?
The first step is to read the headings and labels to understand what the data represents.
Michael is designing a survey to find out students' preferred modes of transportation to school. He wants to include both categorical and numerical data. Give an example of a question for each type of data.
Categorical: "What is your primary mode of transportation to school (e.g., bus, car, bike, walk)?" Numerical: "How many minutes does it take you to get to school?"