Business Statistics Final Exam Questions With Accurate
Answers.
A sample is the entire group of individuals or items being studied - accurate
answers-false
The width of a class, can be determined by subtracting the lower limit of a
class from the lower limit of the next higher class - accurate answers-true
A data list will always have exactly one mean and exactly one mode - accurate
answers-false
The quartiles divide data sets into four equal parts - accurate answers-true
To convert a frequency distribution to a relative frequency distribution, divide
each class frequency by the sum of the class frequencies - accurate answers-
True
A left skewed distribution is not symmetrical and the long tail is to the right -
accurate answers-false
A parameter is a measurable characteristic of a sample - accurate answers-
false
Extremely high or low values affect the value of the median and mode -
accurate answers-false
For any distribution, there are an equal number of values above the mean and
below it - accurate answers-false
The sample variance is roughly the mean of the sum of the squared
differences between each observation and the median - accurate answers-
false
A data set has 80 observations, using the 2 to the k rule, what is the number of
classes? - accurate answers-7
A ________ is a bar graph in which the height of each rectangle is the frequencies
or relative frequencies of the class/categories. The width of each rectangle is
, the same, and the rectangles do not touch each other. - accurate answers-Bar
Chart
After constructing any frequency distribution for a sample, what should be the
sum of the frequencies? - accurate answers-the sample size
Which information can you obtain from a boxplot but not from a histogram? -
accurate answers-Largest and smallest values.
A group of 100 students were surveyed about their interest in a new
international studies program. Interest was measured in terms of high,
medium, and low. What is the type of variable interest? - accurate answers-
Ordinal
A histogram of a data set indicates that the distribution of the data is skewed
left, which measures of central tendency will likely be smaller, the mean or the
median? - accurate answers-mean
which measures of center are not affected by extremely small or extremely
large values? - accurate answers-median and mode+
Using the mean as a measure of center would be least appropriate for which of
the following? - accurate answers-Marital status of college students at a
university
Rank the measures of spread from least difficult to most difficult - accurate
answers-Range, IQR, Variance
right skewed - accurate answers-
left skewed - accurate answers-
Outliers - accurate answers-Q1-1.5(IQR)
Q3+1.5(IQR)
Probability is a measure of the likelihood of a random phenomenon or chance
behavior. - accurate answers-true
Answers.
A sample is the entire group of individuals or items being studied - accurate
answers-false
The width of a class, can be determined by subtracting the lower limit of a
class from the lower limit of the next higher class - accurate answers-true
A data list will always have exactly one mean and exactly one mode - accurate
answers-false
The quartiles divide data sets into four equal parts - accurate answers-true
To convert a frequency distribution to a relative frequency distribution, divide
each class frequency by the sum of the class frequencies - accurate answers-
True
A left skewed distribution is not symmetrical and the long tail is to the right -
accurate answers-false
A parameter is a measurable characteristic of a sample - accurate answers-
false
Extremely high or low values affect the value of the median and mode -
accurate answers-false
For any distribution, there are an equal number of values above the mean and
below it - accurate answers-false
The sample variance is roughly the mean of the sum of the squared
differences between each observation and the median - accurate answers-
false
A data set has 80 observations, using the 2 to the k rule, what is the number of
classes? - accurate answers-7
A ________ is a bar graph in which the height of each rectangle is the frequencies
or relative frequencies of the class/categories. The width of each rectangle is
, the same, and the rectangles do not touch each other. - accurate answers-Bar
Chart
After constructing any frequency distribution for a sample, what should be the
sum of the frequencies? - accurate answers-the sample size
Which information can you obtain from a boxplot but not from a histogram? -
accurate answers-Largest and smallest values.
A group of 100 students were surveyed about their interest in a new
international studies program. Interest was measured in terms of high,
medium, and low. What is the type of variable interest? - accurate answers-
Ordinal
A histogram of a data set indicates that the distribution of the data is skewed
left, which measures of central tendency will likely be smaller, the mean or the
median? - accurate answers-mean
which measures of center are not affected by extremely small or extremely
large values? - accurate answers-median and mode+
Using the mean as a measure of center would be least appropriate for which of
the following? - accurate answers-Marital status of college students at a
university
Rank the measures of spread from least difficult to most difficult - accurate
answers-Range, IQR, Variance
right skewed - accurate answers-
left skewed - accurate answers-
Outliers - accurate answers-Q1-1.5(IQR)
Q3+1.5(IQR)
Probability is a measure of the likelihood of a random phenomenon or chance
behavior. - accurate answers-true
