Statistics Terminology

2. data collected from a sample
3. every element or identity that relates to the investigation
8. measures the average deviation of all the scores from the mean of the data set.
12. data collected by measuring or counting
13. the range of the middle 50% of all the scores
16. data with numerical values that can be expressed as fractions, decimals, as well as rounded off integer values
18. data are recorded in numerical form.
22. non-symmetrical distribution
23. data with numerical values that can only be expressed in integer form
25. a single piece of data
26. charts are used for categorical data only

1. used for summarising numerical data. The stem column holds the group value, and the leaf column holds the final digit.
2. the collection and analysis of data in order to respond to a question.
4. the difference between the highest and lowest scores
5. items of information.
6. data recorded are non-numerical and use labels or categories
7. the middle score of a set of data organised from lowest to highest
9. charts use pieces of the pie or sectors to represent the category
10. like bar charts except that there are no gaps between columns. Used only for numerical data.
11. all elements of a population have an equal chance of being selected.
14. when selected, ensures that groups within a population have a similar representation in a sample.
15. the average of all the scores
17. data categories that are named with some notion of order
18. data categories that are named for each of the possible responses
19. normal distributions
20. a representative portion of the population
21. data collected from an entire population.
24. the score that occurs most frequently