STAT-111
Terms
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- systematic sampling
- sample chosen with a system
- lower class limit
- smallest data value in a class
- Discrete data
- can be counted as a whole number
- upper class limit
- largest data value in a class
- cluster sampling
- divide population by geography or location then sample
- variable
- a characteristic or classification of the members under study
- nominal level
- level classifying data into categories using names or labels
- Histogram
- representation of frequency dist table, columns adjacent
- continuous data
- type of data that can possibly be a fraction
- interval
- level classifying data in order but no natural zero starting point, where zero means nothing
- class midpoint
- lower class boundary (or limit) + upper class boundary (or limit) divided by 2
- Central tendency
- mean, median, mode, and midrange
- number of times data is repeated
- frequency
- Xm
- symbol for class midpoint value
- qualitative
- type of data that is categorized by entries such as the labels (color, names, etc.)
- upper class boundary
- largest data value in a class boundary
- ∑
- symbol for sum
- Class width
- difference of lower class limit in two consecutive classes
- Population
- complete collection of all subject elements
- data
- the observed information which is found from counting, measuring, researching, etc.
- quantitative
- numerical entries
- Median
- the midpoint of the data array (which is when the data is arranged from max to min value
- stratified sampling
- divide population into a group by an important characteristic then sample
- Y-axis
- in histogram (vertical) represents the frequency
- statistic
- numerical measurement describing some characteristic of a sample
- ordinal
- level classifying data that can be arranged in order (e.g. ranking)
- mode
- value of class with most frequencies
- Sample
- subcollection of members selected from the entire population
- Mode
- most occurred value in the data set.
- X-axis
- in histogram (horizontal) represents the class boundaries
- parameter
- numerical measurement describing some characteristic of a population
- ratio level
- classifies data where zero means nothing
- lower class boundary
- smallest data value in a class boundary