Biostats I - Basic Concepts
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The raw material of statistics is _____, which we can define as numbers. | show 🗑
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| In statistics, there are two kinds of numbers: those resulting from _______ and those resulting from ________ | show 🗑
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| show | Measurement
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| ___________ measurements are from the process of counting. | show 🗑
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| a data investigation technology | show 🗑
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| show | - Collection, organization, summarization, and analysis of data.
- Drawing inferences about data when only part if it is observed.
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| show | - Investigate
- Evaluate
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| show | Data Source
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| Data sources are typically available from the following: | show 🗑
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| Data kept by organizations to maintain records of their day-to-day transactions: | show 🗑
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| When information is not available in routinely kept records, a logical alternative source may be: | show 🗑
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| Often, the data needed to answer a question is only available through an: | show 🗑
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| Because the answer to a question may already exist, we should explore: | show 🗑
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| When data analyzed is derived from biological sciences and medicine, we use __________ to distinguish this application of statistical tools and concepts. | show 🗑
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| show | Variable
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| A ____________ variable is one that can be measured in the usual sense. | show 🗑
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| show | - Height of adult males
- Weight of preschool children
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| ___________ variables are the characteristics that cannot be measured (height, weight, age) but ONLY categorized. | show 🗑
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| show | - Medical Diagnoses
- Ethnic Group
- Designations
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| A _________ variable is on that determines an individual's height, weight, or age. | show 🗑
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| If the values of a respective variable arise or can't be predicted, the variable is termed a: | show 🗑
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| show | A baby's adult height at birth. Since it is influenced by genetic and environmental factors and cant be predicted.
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| A random variable that can take a distinct value within a given range: | show 🗑
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| Give a few examples of a discrete random variable: | show 🗑
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| A type of random variable that can take on any value within a given range | show 🗑
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| show | - The height of a person
- Cholesterol levels
- BMI
- Time to recover from an illness
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| show | Population
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| A smaller group taken from the larger population that you want to study: | show 🗑
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| Assigning numbers to objects or events based on a set of rules: | show 🗑
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| show | Nominal Scale
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| A type of measurement scale that not only categorizes date but also ranks them in a specific order. (EX: A survey; 'From 1-5, 1 being very dissatisfied...') | show 🗑
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| The process of drawing conclusions about a population based on information gathered from a sample taken from that population: | show 🗑
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| show | Simple Random Sample
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| A method of selecting a sample of size n from a population by choosing a starting point at random and then selecting every n-th element in the population | show 🗑
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| A method of sampling that involves dividing a population into distinct subgroups, or strata, that share similar characteristics. Then, a random sample is drawn from each stratum. | show 🗑
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