z-score Practice

Front

What is a z-score?

Back

Front

If a value is below the mean by 2 standard deviations, what is its z-score?

Back

-2.00

Front

Calculate the z-score for x = 11, Mean = 27, Standard Deviation = 1.4.

Back

-11.43

Front

What does the symbol \(\mu\) represent in statistics?

Back

The mean of the data.

Front

What does a 'normal' distribution model mean?

Back

It is unimodal and symmetric.

Front

Calculate the z-score for x = 42, Mean = 40, Standard Deviation = 1.4.

Back

1.43

Front

What is the formula for calculating a z-score?

Back

Front

What does a z-score of 0 indicate?

Back

The value is exactly at the mean.

Front

If a z-score is positive, what does it indicate about the value?

Back

The value is above the mean.

Front

If a z-score is negative, what does it indicate about the value?

Back

The value is below the mean.