IB SEHS Topic 6.1 Statistical Analysis

Front

What is the coefficient of variation?

Back

The ratio of the standard deviation to the mean expressed as a percent.

Front

What describes the difference between two sets of group data?

Back

The answer is D.

Front

What does standard deviation represent?

Back

Spread of the variability of data around a mean.

Front

What does a large standard deviation indicate?

Back

The data is spread widely around the mean.

Front

What is the mean of five timed trials of a 20 m sprint test if the times are 3.90s, 3.95s, 4.00s, 4.05s, and 4.10s?

Back

4.00s.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values).

Front

What is the purpose of using standard deviation in statistics?

Back

To measure the amount of variation or dispersion in a set of values.

Front

How does a small standard deviation affect data interpretation?

Back

It indicates that the data points tend to be close to the mean.

Front

What is the relationship between variance and standard deviation?

Back

Standard deviation is the square root of variance.

Front

What is a normal distribution?

Back

A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence.