Scatter plots in MATLAB - Mini Project: Build & Apply

Scatter plots

📖 Scenario: You are a scientist who collected data about the heights and weights of a group of people. You want to visualize this data to see if there is any pattern between height and weight.

🎯 Goal: Create a scatter plot in MATLAB that shows the relationship between height and weight.

📋 What You'll Learn

Create two vectors called height and weight with given data

Create a variable called markerSize to control the size of the scatter plot points

Use the scatter function with height, weight, and markerSize

Add labels to the x-axis and y-axis

Display the scatter plot

💡 Why This Matters

🌍 Real World

Scientists and data analysts often use scatter plots to see if two things are related, like height and weight.

💼 Career

Knowing how to create scatter plots is useful in jobs involving data visualization, research, and reporting.

1

Create the data vectors

Create a vector called height with these exact values: [150, 160, 170, 180, 190] and a vector called weight with these exact values: [50, 60, 70, 80, 90].

MATLAB

% Create vectors height and weight with given values
% Your code here

Need a hint?

Use square brackets [] to create vectors in MATLAB.

2

Set the marker size

Create a variable called markerSize and set it to 100 to control the size of the scatter plot points.

MATLAB

height = [150, 160, 170, 180, 190];
weight = [50, 60, 70, 80, 90];
% Create markerSize variable and set it to 100
% Your code here

Need a hint?

Just assign the number 100 to the variable markerSize.

3

Create the scatter plot

Use the scatter function with height, weight, and markerSize to create the scatter plot.

MATLAB

height = [150, 160, 170, 180, 190];
weight = [50, 60, 70, 80, 90];
markerSize = 100;
% Create scatter plot using scatter function
% Your code here

Need a hint?

Use scatter(height, weight, markerSize) to plot the points.

4

Add labels and display the plot

Add the x-axis label 'Height (cm)' using xlabel and the y-axis label 'Weight (kg)' using ylabel. Then display the plot.

MATLAB

height = [150, 160, 170, 180, 190];
weight = [50, 60, 70, 80, 90];
markerSize = 100;
scatter(height, weight, markerSize);
% Add x-axis and y-axis labels
% Your code here

Need a hint?

Use xlabel('Height (cm)') and ylabel('Weight (kg)') to add labels.