Have a "sample"
Each member of the population has an equal chance of getting selected.
What is random sampling?
A numerical measurement describing some characteristic of a population.
What is a parameter?
A graph consisting of bars of an equal width drawn adjacent to each other.
What is a histogram?
Found by multiplying each data value by a weight and then adding the up and dividing by the sum of the weights.
What is the weighted mean?
Found by subtracting the minimum data value from the maximum data value.
What is the range?
Using results that are easy to get.
What is convenience sampling?
A sub-collection of members selected from the population.
What is a sample?
A distribution in which all the bars are the same height or nearly so.
What is a uniform distribution?
The data value that occurs with the greatest frequency.
What is the mode?
Sometimes called the 68-95-99.7 Rule.
What is the Empirical Rule?
Selecting from some starting point and then taking every tenth element in the population.
What is systematic sampling?
A numerical measurement describing some characteristic of a sample.
What is a statistic?
A distribution in which the appear to make a "bell" shape.
What is symmetric?
This is the value that is midway between the minimum and maximum values.
What is the midrange?
This is the standard deviation squared.
What is the variance?
Sub-dividing a population into two or more sub-groups such that subjects in each sub-group share some characteristics and then drawing a sample from each sub-group.
What is stratified sampling?
A collection of data from every member of the population.
What is a census?
This plot separates each data value into two parts.
What is a stemplot?
Found by adding up all the data values and then dicing by the number of data values.
What is the mean?
This value describes the standard deviation relative to the mean.
What is the coefficient of variation?
Dividing the population into sections, randomly choosing one section, then choosing all members from that section.
What is cluster sampling?
Data consisting of numbers representing counts or measurements.
What is quantitative data?
A graph in which has an axis that begins at some point other than zero is said to do this.
What is deceive?
The middle value when the data are arranged in order.
What is the median?
The range of usual values can be found by subtracting 2 of these from the mean and adding two of these to the mean.
What is the standard deviation?