BSTAT Test #1 questions and answers
graded A+ passed
Statistics - correct answer ✔✔science of collecting, organizing, presenting, analyzing, and
interpreting data to assist in making more effective decisions
Descriptive statistics - correct answer ✔✔methods of organizing, summarizing, or analyzing
data in an informative way
Inferential statistics - correct answer ✔✔the methods used to estimate a property of a
population on the basis of a sample
Population - correct answer ✔✔entire set of individuals or objects of interest
Qualitative (attribute) data - correct answer ✔✔non- numeric outcomes
Quantitative data - correct answer ✔✔discrete or continuous variables
Sample - correct answer ✔✔portion or part of the population
Nominal - correct answer ✔✔no order
ex: jersey numbers
Ordinal - correct answer ✔✔only ranked or counted
ex: class rank
, Interval - correct answer ✔✔distance between values is meaningful
ex: dress size
Ratio - correct answer ✔✔meaningful 0 and ratio between values
Ex: distance to class
Dispersion - correct answer ✔✔variation of data
Parameter - correct answer ✔✔characteristic of a population
Statistic - correct answer ✔✔characteristic of a sample
Characteristics of the arithmetic mean - correct answer ✔✔most widely used measure
interval or ratio level
all values are included
mean is unique
sum of values minus mean=0
Measures of centrality - correct answer ✔✔mean, median, mode
Measures of dispersion - correct answer ✔✔range, variance, standard deviation
*range is not a satisfactory measure
Median - correct answer ✔✔at least ordinal level
not influenced by extreme values
unique
graded A+ passed
Statistics - correct answer ✔✔science of collecting, organizing, presenting, analyzing, and
interpreting data to assist in making more effective decisions
Descriptive statistics - correct answer ✔✔methods of organizing, summarizing, or analyzing
data in an informative way
Inferential statistics - correct answer ✔✔the methods used to estimate a property of a
population on the basis of a sample
Population - correct answer ✔✔entire set of individuals or objects of interest
Qualitative (attribute) data - correct answer ✔✔non- numeric outcomes
Quantitative data - correct answer ✔✔discrete or continuous variables
Sample - correct answer ✔✔portion or part of the population
Nominal - correct answer ✔✔no order
ex: jersey numbers
Ordinal - correct answer ✔✔only ranked or counted
ex: class rank
, Interval - correct answer ✔✔distance between values is meaningful
ex: dress size
Ratio - correct answer ✔✔meaningful 0 and ratio between values
Ex: distance to class
Dispersion - correct answer ✔✔variation of data
Parameter - correct answer ✔✔characteristic of a population
Statistic - correct answer ✔✔characteristic of a sample
Characteristics of the arithmetic mean - correct answer ✔✔most widely used measure
interval or ratio level
all values are included
mean is unique
sum of values minus mean=0
Measures of centrality - correct answer ✔✔mean, median, mode
Measures of dispersion - correct answer ✔✔range, variance, standard deviation
*range is not a satisfactory measure
Median - correct answer ✔✔at least ordinal level
not influenced by extreme values
unique
