1-1 Descriptive and inferential statistics Flashcards

1
Q

variable

A

characteristics or attributes that can be different values

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2
Q

Data

A

measurements/observations that variables are

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3
Q

random variables

A

variable values that are determined by chance

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4
Q

Data set

A

collection of data values

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5
Q

Datum

A

values on a data set

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6
Q

population

A

number of subjects being studied

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7
Q

census

A

data collected on all subjects in a population

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8
Q

sample

A

group selected from population (subgroup)

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9
Q

Descriptive statistics

A

summary of data that is presented

specific: weight loss from specific group of subjects

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10
Q

inferential statistics

A

general of sample to population and making predictions

future, generalization

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11
Q

Probability

A

chance of event occurring

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12
Q

Hypothesis testing

A

decision making process for evaluating claims about a population based on info from a SAMPLE

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13
Q

Statistics

A
Statistics is the science of
conducting studies to
collect, organize,
summarize, analyze, and
draw conclusions from data.
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14
Q

three areas probability is used

A

insurance,gambling, weather forecast

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15
Q

Why is information obtained
from samples used more often
than information obtained
from populations?

A

populations are too large. Cannot have every subject included.

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16
Q

biased sample

A

sample that does not represent the population