Recall & Review
beginner
What is the basic difference between a bar plot and a histogram in MATLAB?
A bar plot displays the values of categorical or numerical data as bars with heights representing the values. A histogram shows the distribution of numerical data by grouping data into bins and counting how many values fall into each bin.
Click to reveal answer
beginner
How do you create a simple bar plot for the data vector
y = [5, 10, 15] in MATLAB?Use the command
bar(y). This will create vertical bars with heights 5, 10, and 15 respectively.Click to reveal answer
beginner
Which MATLAB function is used to create a histogram of data?
The function
histogram(data) creates a histogram plot showing the distribution of the numerical data.Click to reveal answer
intermediate
How can you specify the number of bins in a histogram in MATLAB?
You can specify the number of bins by passing a second argument to
histogram, for example histogram(data, 10) creates a histogram with 10 bins.Click to reveal answer
intermediate
What MATLAB command would you use to create a horizontal bar plot?
Use the
barh(y) function to create a horizontal bar plot where bars extend horizontally.Click to reveal answer
Which MATLAB function creates a plot showing the frequency distribution of data?
✗ Incorrect
The
histogram() function groups data into bins and shows frequency distribution.What does the height of each bar represent in a bar plot?
✗ Incorrect
In a bar plot, each bar's height corresponds to the actual value of the data point.
How do you change the number of bins in a MATLAB histogram?
✗ Incorrect
You specify the number of bins by passing the 'NumBins' name-value pair argument to
histogram.Which command creates a horizontal bar plot in MATLAB?
✗ Incorrect
barh(y) creates horizontal bars instead of vertical bars.If you want to visualize categories with their values, which plot is best?
✗ Incorrect
Bar plots are best for showing values for different categories.
Explain how to create a histogram in MATLAB and how to control the number of bins.
Think about grouping data into ranges and counting how many fall in each.
You got /4 concepts.
Describe the difference between a bar plot and a histogram and when to use each.
Consider what each plot tells you about the data.
You got /4 concepts.