STAT 201- Exam 1 TAMU Questions With
Correct Answers
role of statistician - CORRECT ANSWER✔✔-1. Design Studies
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2. Analyze Data
| |
3. Translate data into knowledge and understanding of the world
| | | | | | | | | |
around us |
descriptive statistics - CORRECT ANSWER✔✔-organizing and
| | | | | |
summarizing data |
inferential statistics - CORRECT ANSWER✔✔-formal methods for
| | | | | | |
drawing conclusions from data
| | |
probability - CORRECT ANSWER✔✔-mathematical study of uncertainty-
| | | | | | |
foundation of statistics | |
population - CORRECT ANSWER✔✔-all individuals, objects, or things
| | | | | | | |
whose properties are being studied
| | | |
,parameter - CORRECT ANSWER✔✔-a number that is used to represent
| | | | | | | | | |
a characteristic of the population and that generally cannot be
| | | | | | | | | |
determined easily |
sample - CORRECT ANSWER✔✔-a subset of the population of interest
| | | | | | | | | |
that we will collect data on
| | | | |
representative sample - CORRECT ANSWER✔✔-a subset of the | | | | | | | |
population that has the same characteristics as the population of
| | | | | | | | | |
interest
statistic - CORRECT ANSWER✔✔-- a number that represents the
| | | | | | | | |
property of interest in the sample
| | | | | |
- an estimate of the parameter value that we get looking only at the
| | | | | | | | | | | | | |
sample
parameter is to population as statistic is to sample - CORRECT
| | | | | | | | | | |
ANSWER✔✔-we use the statistic, calculated from data obtained from a | | | | | | | | | |
sample, in order to estimate the parameter which is unknown
| | | | | | | | |
1. Have parameter that you are interested in learning about for some
| | | | | | | | | | | |
population
2. Obtain a sample from the pop.
| | | | | | |
3. Gather data on that sample
| | | | |
4. Calculate a statistic
| | |
, 5. Use the statistic as an estimate of the parameter
| | | | | | | | |
variable - CORRECT ANSWER✔✔-- a characteristic or measurement that
| | | | | | | | |
can be determined for each member of a population
| | | | | | | |
- 2 types
| |
numerical/quantitative variable - CORRECT ANSWER✔✔-- take on a | | | | | | | |
number value of units | | |
- discrete: measured in whole units (count data)
| | | | | | |
- continuous: can be measured in decimals (time to finish a race)
| | | | | | | | | | |
categorical/qualitative variable - CORRECT ANSWER✔✔-- take on a label | | | | | | | |
- nominal: no natural order to the variables (ethnicity)
| | | | | | | |
- ordinal: is a natural order to variables ( movie reviews)
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Identify population, statistic, parameter, sample, variable, & data:
| | | | | | | |
We want to know the average (mean) amount of money spent on school
| | | | | | | | | | | |
uniforms each year by families with kids at Knoll Academy. We
| | | | | | | | | | | |
randomly survey 100 families with kids in the school. Three families
| | | | | | | | | | |
spent $65, $75, and $95, respectively - CORRECT ANSWER✔✔--
| | | | | | | | |
Population: families whose kids attend Knoll Academy | | | | | |
- Statistic: mean amount of $ spent on uniforms
| | | | | | | |
- Parameter: price spent on school uniform
| | | | | |
Correct Answers
role of statistician - CORRECT ANSWER✔✔-1. Design Studies
| | | | | | |
2. Analyze Data
| |
3. Translate data into knowledge and understanding of the world
| | | | | | | | | |
around us |
descriptive statistics - CORRECT ANSWER✔✔-organizing and
| | | | | |
summarizing data |
inferential statistics - CORRECT ANSWER✔✔-formal methods for
| | | | | | |
drawing conclusions from data
| | |
probability - CORRECT ANSWER✔✔-mathematical study of uncertainty-
| | | | | | |
foundation of statistics | |
population - CORRECT ANSWER✔✔-all individuals, objects, or things
| | | | | | | |
whose properties are being studied
| | | |
,parameter - CORRECT ANSWER✔✔-a number that is used to represent
| | | | | | | | | |
a characteristic of the population and that generally cannot be
| | | | | | | | | |
determined easily |
sample - CORRECT ANSWER✔✔-a subset of the population of interest
| | | | | | | | | |
that we will collect data on
| | | | |
representative sample - CORRECT ANSWER✔✔-a subset of the | | | | | | | |
population that has the same characteristics as the population of
| | | | | | | | | |
interest
statistic - CORRECT ANSWER✔✔-- a number that represents the
| | | | | | | | |
property of interest in the sample
| | | | | |
- an estimate of the parameter value that we get looking only at the
| | | | | | | | | | | | | |
sample
parameter is to population as statistic is to sample - CORRECT
| | | | | | | | | | |
ANSWER✔✔-we use the statistic, calculated from data obtained from a | | | | | | | | | |
sample, in order to estimate the parameter which is unknown
| | | | | | | | |
1. Have parameter that you are interested in learning about for some
| | | | | | | | | | | |
population
2. Obtain a sample from the pop.
| | | | | | |
3. Gather data on that sample
| | | | |
4. Calculate a statistic
| | |
, 5. Use the statistic as an estimate of the parameter
| | | | | | | | |
variable - CORRECT ANSWER✔✔-- a characteristic or measurement that
| | | | | | | | |
can be determined for each member of a population
| | | | | | | |
- 2 types
| |
numerical/quantitative variable - CORRECT ANSWER✔✔-- take on a | | | | | | | |
number value of units | | |
- discrete: measured in whole units (count data)
| | | | | | |
- continuous: can be measured in decimals (time to finish a race)
| | | | | | | | | | |
categorical/qualitative variable - CORRECT ANSWER✔✔-- take on a label | | | | | | | |
- nominal: no natural order to the variables (ethnicity)
| | | | | | | |
- ordinal: is a natural order to variables ( movie reviews)
| | | | | | | | | |
Identify population, statistic, parameter, sample, variable, & data:
| | | | | | | |
We want to know the average (mean) amount of money spent on school
| | | | | | | | | | | |
uniforms each year by families with kids at Knoll Academy. We
| | | | | | | | | | | |
randomly survey 100 families with kids in the school. Three families
| | | | | | | | | | |
spent $65, $75, and $95, respectively - CORRECT ANSWER✔✔--
| | | | | | | | |
Population: families whose kids attend Knoll Academy | | | | | |
- Statistic: mean amount of $ spent on uniforms
| | | | | | | |
- Parameter: price spent on school uniform
| | | | | |
