Stats FINAL

Whether or not a universitys enrollment increased from last year to this year is an example of

Qualitative Data

Mean and Median are only used for _____ data

Quantative Data

A numerical measure calculated from sample data is called____

Statistic

According the the empirical rule, the percentage of values that fall within on standard deviation of that mean is approximately___

68%

According to the empirical rule the percentage of values that fall outside two standard deviations of the mean is approximately_____%

7%

According to the empirical rule, the percentage of values that fall within two standard deviations of the mean are____

95%

According to the empirical rule, the percentage of values that fall within three standard deviations of the mean are ____

99.7%

We can construct a frequency histogram for____data

Continuous

Total insect population among 12 US national parks in 2003 is an example of:

Cross-selection data

The outlier influences the _____ the most

Mean

_____ Can be used to for Quantative and Qualitative Data

Mode

In statistics a representative sample is the sample that:

Contains the characteristics of the population as closely as possible

The quantity x-u is called the:

Deviatioin of x from the mean

Classify the variable as discrete or continuous : number of stars in our galaxy

Discrete

The tow types of variables are continuous and

Discrete

A random sample is a sample drawn in such a way that"

Each member of the population has some chanse of being included in the sample

An observation is____

Value of a variable for a single element

A rectangular histogram has:

a long tail on the right side

A numerical measure calculated from population data is called_____

parameter

The procedure for obtaining the variance from the standard deviation is to:

square the standard deviation