The mean square of the data set is calculated by finding the average of the squares of each number.

I visited Meadow last summer.

French measles is a highly contagious viral infection.

I was diagnosed with 10-day measles.

My daughter had the three-day measles last month.

She was diagnosed with 3-day measles.

My sister caught the 7-day measles.

She was diagnosed with false measles.

She developed red measles after being exposed to an infected person.

She had a hard time recovering from the measles.