Warm Up 11/08

Front

Can a data set have more than one median?

Back

No, a data set can only have one median.

Front

Can a data set have more than one mode?

Back

Yes, a data set can have multiple modes.

Front

What percentage of data falls within 2 standard deviations of the mean in a normal distribution?

Back

Approximately 95% of the data falls within 2 standard deviations.

Front

What percentage of data is between 0 and -1 standard deviations in a normal distribution?

Back

Approximately 34% of the data is between 0 and -1 standard deviations.

Front

What is the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

What is the median of a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

What is the mean of a data set?

Back

The mean is the average of all the values in a data set.

Front

What does standard deviation measure?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

What is a normal distribution?

Back

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

Front

What is the empirical rule in statistics?

Back

The empirical rule states that for a normal distribution, approximately 68% of the data falls within 1 standard deviation, 95% within 2 standard deviations, and 99.7% within 3 standard deviations.