Discrete vs. Continuous Data
This type of data uses numbers you can count, like the number of students in class.
discrete data
This data describes qualities, like the colour of a pet.
What is qualitative data?
Graph 1: What day were the MOST amount of cars sold?
Line Plot- Friday
This graph shows changes over time, like the temperature each day, with connected lines.
broken line graph
What is the mode of the following set of numbers?
5 6 8 9 8
9
This type of data you measure, like someone's height.
Continuous data
This data uses numbers, like how tall a tree is.
What is quantitative data?
Graph 2- What was the LEAST favourite sport in this class?
Pie Chart- Hockey (5%)
This graph compares different categories, like favourite sports in a class.
A bar graph
What is the median of the following set of numbers?
6 5 6 12 11 13 4
4 5 6 6 11 12 13 = 6
Distance run in a race is an example of what kind of data?
Continuous data
"Red, blue, or green" is this type of data because it's about descriptions, not counts.
What is qualitative data?
Graph 3- What is the boys least favourite subject and what is the girls?
Multi Bar Graph-
Boys: Physics and English
Girls: Physics
This graph groups numbers into ranges and the bars touch each other
Histogram
What is the range of the following set of numbers?
23 32 54 65 32 45
65 - 23 = 42
The number of sides on a shape is what kind of data?
Discrete data
The number of books on a shelf is this type since you can measure it with numbers.
What is quantitative data?
Graph 4- Which burgers should we stock the most of for next weekend?
Stacked Bar Graph- Beef
This graph shows individual data points as Xs or dots on a number line to help show how many times a number appears.
Line Plot
What is the mean of the following set of number?
32 43 54 12 45
32 + 43 + 54 + 12 + 45 = 186 / 5 = 37.2
37
Name two examples of continuous data from everyday life
Height, length, mass, etc.
Give an example of qualitative data.
What is (example like) colour or shape?
Graph 5- What range were the majority of pencils in the class?
Histogram- 15-20cm
This graph compares categories but also shows parts within each category stacked together.
Stacked Bar Graph
Jordan scored a mean of 18 points per game over 5 games, but one game’s points were not recorded. What could Jordan have scored in the missing game?
Points scored:
12 20 22 16 ?
20