You want to write a table T to a CSV file but only include columns where the mean of numeric data is above 50. How can you do this in MATLAB?

hard📝 Application Q9 of 15

MATLAB - File I/O

You want to write a table T to a CSV file but only include columns where the mean of numeric data is above 50. How can you do this in MATLAB?

AUse writetable with 'WriteVariableNames', false

BFilter columns by mean, then use writetable on filtered table

CUse writematrix on the whole table

DUse csvwrite after converting table to matrix

Step-by-Step Solution

Solution:

Step 1: Calculate mean of numeric columns
Extract numeric columns and compute their means.
Step 2: Filter columns with mean > 50 and write
Create a new table with filtered columns and use writetable to save.
Final Answer:
Filter columns by mean, then use writetable on filtered table -> Option B
Quick Check:
Filter columns before writetable to save selective data [OK]

Quick Trick: Filter table columns before saving with writetable [OK]

Common Mistakes:

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