### Prob/Stats: Chapter 1 Vocabulary

by Amber Hunnicutt

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Across
1.study in which data are collected from the past by going back in time
3.members from the population are selected in such a way that each individual member has an equal chance of being selected
5.data that results from infinitely many possible values that correspond to some continuous scale that covers a range of values without gaps, interruptions, or jumps
9.can be separated into different categories that are distinguished by some nonnumerical characteristic
11.the collection of data from every member of the population
12.data that results when the number of possible values is either a finite number or a "countable number"
17.observes and measures specific characteristics, but doesn't attempt to modify the subjects being studied
19.a subcollection of members selected from a population
22.we subdivide the population into at least two different subgroups that share the same characteristics, then we draw a sample from each subgroup
23.applies some treatment and then proceeds to observe its effects on the subjects
24.study in which data are collected in the future from groups sharing common factors
Down
2.we simply use results that are very easy to get
4.occurs when an untreated subject incorrectly believes that he or she is receiving a real treatment and reports an improvement in symptoms
6.a numerical measurement describing some characteristic of a sample
7.observations (such as measurements, genders, survey responses) that have been collected
8.consist of numbers representing counts or measurements
10.procedure used in experiments whereby the subject doesn't know whether he or she is a receiving a treatment or a placebo
13.we select some starting point and then select every nth element in the population
14.occurs when the sample data are incorrectly collected, recorded, or analyzed
15.study in which data are observed, measured, and collected at one point in time
16.we first divide the population area into sections, then randomly select some of those clusters, and then choose all the members from those selected clusters
18.the complete collection of all elements to be studied
19.the difference between a sample result and the true population result
20.occurs in an experiment when the experimenter is not able to distinguish between the effects of different factors
21.a numerical measurement describing some characteristic of a population

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