MAT 150 ACTUAL TEST PAPER FULL
QUESTIONS AND ACCURATE ANSWERS
GRADED APLUS
●● Population
Answer: All persons or things about which one is trying to make a
decision. Statistical studies are centered around it.
-Whole group
-Group we want to know about
-Characteristics called parameters
-Parameters are unknown
-Parameters are fixed
●● Variables
Answer: The values that change among members of the population.
●● Data
Answer: The information gathered about a specific variable.
●● Census
Answer: Small population and data obtained from every member.
,●● Parameter
Answer: Numerical description of a particular population characteristic.
●● Sample
Answer: Subset of the population from which data are collected.
-Part of a group
-Group we know about
-Statistics are known and change within it
●● Sample Statistics
Answer: Numerical descriptions of sample characteristics.
●● Descriptive Statistics
Answer: Gathers, sorts, summarizes, and displays the data.
●● Inferential Statistics
Answer: Using descriptive stats to estimate population parameters.
●● Qualitative Data
Answer: Descriptions (rankings, favorite food, hometown, eye color)
, ●● Quantitative Data
Answer: Counts and measurements (test scores, weights, time)
●● Continuous Data
Answer: Take on any value in a given range of numbers, usually
measurements (length & weight)
●● Discrete Data
Answer: Only particular values and not in between (like the # of pets
you have)
●● Nominal level
Answer: Lowest level, qualitative, labels of names.
●● Ordinal level
Answer: 2nd level, qualitative, ordered ratings/rankings.
●● Interval level
Answer: 3rd level, quantitative, different data entries are meaningful
(average temperature in various cities, birth years, IQ score).
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QUESTIONS AND ACCURATE ANSWERS
GRADED APLUS
●● Population
Answer: All persons or things about which one is trying to make a
decision. Statistical studies are centered around it.
-Whole group
-Group we want to know about
-Characteristics called parameters
-Parameters are unknown
-Parameters are fixed
●● Variables
Answer: The values that change among members of the population.
●● Data
Answer: The information gathered about a specific variable.
●● Census
Answer: Small population and data obtained from every member.
,●● Parameter
Answer: Numerical description of a particular population characteristic.
●● Sample
Answer: Subset of the population from which data are collected.
-Part of a group
-Group we know about
-Statistics are known and change within it
●● Sample Statistics
Answer: Numerical descriptions of sample characteristics.
●● Descriptive Statistics
Answer: Gathers, sorts, summarizes, and displays the data.
●● Inferential Statistics
Answer: Using descriptive stats to estimate population parameters.
●● Qualitative Data
Answer: Descriptions (rankings, favorite food, hometown, eye color)
, ●● Quantitative Data
Answer: Counts and measurements (test scores, weights, time)
●● Continuous Data
Answer: Take on any value in a given range of numbers, usually
measurements (length & weight)
●● Discrete Data
Answer: Only particular values and not in between (like the # of pets
you have)
●● Nominal level
Answer: Lowest level, qualitative, labels of names.
●● Ordinal level
Answer: 2nd level, qualitative, ordered ratings/rankings.
●● Interval level
Answer: 3rd level, quantitative, different data entries are meaningful
(average temperature in various cities, birth years, IQ score).
0 is a placeholder.
