BADDD (A) and (AB)
Identified the following variables are qualitative variables or quantitative variables, and then pointed out that a measure of the level of each variable.
Annual sales of quantitative variables scale variables.
Starbucks coffee cup size scale qualitative variables variables.
Earnings per share for scale variables quantitative variables.
Payment method qualitative variables, nominal variables.
Pointed out that the metric type the following variables.
In the name of national variables.
Grade ordinal variables.
Last year, the family income scale variables.
Yesterday's highest temperature scale variable.
What is the overall, what is the sample? Difference between the two?
Of all its statistical study of a collection of objects called overall.
A representative subset of the overall study is called the sample cover.
It can be extracted from a whole number of samples.
What are the parameters? What are the statistics? What is the difference between the two?
Often be described statistically by a number of general numerical index feature, these indicators generally referred to as the parameter for sample characteristics and specification referred to statistics, and concentrated to summarize the general information pressing a statistic sample is implied.