8) A cumulative relative frequency distribution shows _____
A) the proportion of data items with values less than the upper limit of each class
B) the proportion of data items with values less than the lower limit of each class
C) the proportion of data items with values more than the lower limit of each class
D) the proportion of data items with values more than the upper limit of each class
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A) the proportion of data items with values less than the upper limit of each
class
the median is appropriate method to use for the following situations except when _____
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, you want to report an expected value
a study was undertaken to establish the 90% confidence interval for monthly
household food expenditure for residents in Toronto. A sample of 28 household food
expenditures was selected. The average household food expenditure for the sample
is $185 with a standard deviation of $25. The confidence interval is approximately
between _____
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$176.95 and $193.05
which of the following conditions will require in the minimum sample size for a sound
inferential decision?
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a decrease in margin of error
18) 15% of the students in the class are majoring in Justice studies, 20% in early
childhood studies, 35% in family and social work, and 30% in psychology. The
appropriate graphical device which can be used to present these data is _____
A) a pie chart
B) a line chart
C) a time series
D) a scatter diagram
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, A) a pie chart
A sample items in a store has an average price of $36 and a standard deviation of $4.
This means ____________
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c) Most of the prices vary between $32 and $40
Explanation:
The standard deviation is a measure of how spread out the prices are from
the average price. A small standard deviation means that the prices are
clustered close to the average, while a large standard deviation means that
the prices are more spread out.
In this case, the standard deviation is small, so most of the prices are close
to the average price of $36. This means that there aren't many prices that
are far above or below the average. Most of the prices fall between $32
and $40, with only a few prices outside of that range.
the right whisker of a boxplot is longer than the left whisker. this means _____
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the distribution is a right skewed
a perfect positive relationship between 2 variables will have a correlation coefficient
value of
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A) the proportion of data items with values less than the upper limit of each class
B) the proportion of data items with values less than the lower limit of each class
C) the proportion of data items with values more than the lower limit of each class
D) the proportion of data items with values more than the upper limit of each class
Give this one a try later!
A) the proportion of data items with values less than the upper limit of each
class
the median is appropriate method to use for the following situations except when _____
Give this one a try later!
, you want to report an expected value
a study was undertaken to establish the 90% confidence interval for monthly
household food expenditure for residents in Toronto. A sample of 28 household food
expenditures was selected. The average household food expenditure for the sample
is $185 with a standard deviation of $25. The confidence interval is approximately
between _____
Give this one a try later!
$176.95 and $193.05
which of the following conditions will require in the minimum sample size for a sound
inferential decision?
Give this one a try later!
a decrease in margin of error
18) 15% of the students in the class are majoring in Justice studies, 20% in early
childhood studies, 35% in family and social work, and 30% in psychology. The
appropriate graphical device which can be used to present these data is _____
A) a pie chart
B) a line chart
C) a time series
D) a scatter diagram
Give this one a try later!
, A) a pie chart
A sample items in a store has an average price of $36 and a standard deviation of $4.
This means ____________
Give this one a try later!
c) Most of the prices vary between $32 and $40
Explanation:
The standard deviation is a measure of how spread out the prices are from
the average price. A small standard deviation means that the prices are
clustered close to the average, while a large standard deviation means that
the prices are more spread out.
In this case, the standard deviation is small, so most of the prices are close
to the average price of $36. This means that there aren't many prices that
are far above or below the average. Most of the prices fall between $32
and $40, with only a few prices outside of that range.
the right whisker of a boxplot is longer than the left whisker. this means _____
Give this one a try later!
the distribution is a right skewed
a perfect positive relationship between 2 variables will have a correlation coefficient
value of
Give this one a try later!
