AP STATS MIDTERM EXAM LATEST QUESTIONS
& VERIFIED ANSWERS 2025 100%
GUARANTEED PASS
"What is the difference between a parameter and a statistic? - CORRECT ANSWER=> -describes the
true characteristic of a population, and a statistic represents a characteristic of a SAMPLE"
"What is variance equal to? - CORRECT ANSWER=> Variance = standard deviation squared"
"Standard deviation conditions - CORRECT ANSWER=> it cannot be negative, if std is zero that means
all the values are the same, and the larger the standard deviation=the larger the spread"
"Which measures should you use when the distribution is skewed with outliers? - CORRECT ANSWER=>
Median and IQR;they are resistant values which will not be affected by unusual features or shape
differences"
"If the distribution is symetric with no outliers which measures should you take? - CORRECT
ANSWER=> the mean and standard deviation, these are more sensitive values"
"-what are the four principles of a well designed experiment - CORRECT ANSWER=> controll, random
assignment, comparison, replication"
"what is a completely randomized experimental design - CORRECT ANSWER=> -the treatments are
truly randomly assigned to each subject"
"what is a randomized block design - CORRECT ANSWER=> when there are variables which cannot be
accounted for;blocks=groups which are known to similarly affect the response variable"
"benefits of a randomized block design - CORRECT ANSWER=> -there is a reduction variability and
more precise comparison"
"matched pair design - CORRECT ANSWER=> -comparing two treatments which use blocks of size 2:
those pairs are similar subjects and they will be randomly assigned a treatment but will each get all
treatments eventually"
"two way table - CORRECT ANSWER=> summarizes the responses of two categorical variables:"
"marginal relative frequencies - CORRECT ANSWER=> shows the percents by using two way tables:
shows the percentage of the prevelance of one catagorical data in the entire population"
, "joint relative frequency - CORRECT ANSWER=> the percentage of people who posess a specific value
for one catagorical value and a specific value for another"
"conditional relative frequency - CORRECT ANSWER=> the percentage of the population which shares
one catagorical value given a condition"
"Which visual graphs can display comparisons between categorical values? - CORRECT ANSWER=> -side
by side bar graph, segmented bar graph, or a mosaic plot"
"mosaic plot - CORRECT ANSWER=> a modified segmented bar graph in which the width of each
rectangle is proportional to the number of individuals in the corresponding category: improved because
it allows to see proportions and make connections through that"
"mean > median - CORRECT ANSWER=> skewed left"
"mean=median - CORRECT ANSWER=> symetric"
"mean < median - CORRECT ANSWER=> skewed right"
"What do the upper and lower fences do? - CORRECT ANSWER=> they determine outliers"
"What is the classic five number summary in stat? - CORRECT ANSWER=>
min,q1.median,q3,max,mean"
"what does it mean if a value is in the pth percentile? - CORRECT ANSWER=> p= the percent of the
population which is lower/below the given value"
"Cumulative Relative frequency graph - CORRECT ANSWER=> -connects to the percents of a
distribution"
"what do z scores tell us? - CORRECT ANSWER=> -how many standard deviations away a value is from
the mean"
"z score formula - CORRECT ANSWER=> (value-mean)/standard deviation"
"How does transforming data through addition and subtraction (adding or subtracting the same number
from each data point) affect the distribution and measures? - CORRECT ANSWER=> -centers: they will
shift, original value+/- the constant
-spread measures: they will stay the same
-shape: stays the same"
& VERIFIED ANSWERS 2025 100%
GUARANTEED PASS
"What is the difference between a parameter and a statistic? - CORRECT ANSWER=> -describes the
true characteristic of a population, and a statistic represents a characteristic of a SAMPLE"
"What is variance equal to? - CORRECT ANSWER=> Variance = standard deviation squared"
"Standard deviation conditions - CORRECT ANSWER=> it cannot be negative, if std is zero that means
all the values are the same, and the larger the standard deviation=the larger the spread"
"Which measures should you use when the distribution is skewed with outliers? - CORRECT ANSWER=>
Median and IQR;they are resistant values which will not be affected by unusual features or shape
differences"
"If the distribution is symetric with no outliers which measures should you take? - CORRECT
ANSWER=> the mean and standard deviation, these are more sensitive values"
"-what are the four principles of a well designed experiment - CORRECT ANSWER=> controll, random
assignment, comparison, replication"
"what is a completely randomized experimental design - CORRECT ANSWER=> -the treatments are
truly randomly assigned to each subject"
"what is a randomized block design - CORRECT ANSWER=> when there are variables which cannot be
accounted for;blocks=groups which are known to similarly affect the response variable"
"benefits of a randomized block design - CORRECT ANSWER=> -there is a reduction variability and
more precise comparison"
"matched pair design - CORRECT ANSWER=> -comparing two treatments which use blocks of size 2:
those pairs are similar subjects and they will be randomly assigned a treatment but will each get all
treatments eventually"
"two way table - CORRECT ANSWER=> summarizes the responses of two categorical variables:"
"marginal relative frequencies - CORRECT ANSWER=> shows the percents by using two way tables:
shows the percentage of the prevelance of one catagorical data in the entire population"
, "joint relative frequency - CORRECT ANSWER=> the percentage of people who posess a specific value
for one catagorical value and a specific value for another"
"conditional relative frequency - CORRECT ANSWER=> the percentage of the population which shares
one catagorical value given a condition"
"Which visual graphs can display comparisons between categorical values? - CORRECT ANSWER=> -side
by side bar graph, segmented bar graph, or a mosaic plot"
"mosaic plot - CORRECT ANSWER=> a modified segmented bar graph in which the width of each
rectangle is proportional to the number of individuals in the corresponding category: improved because
it allows to see proportions and make connections through that"
"mean > median - CORRECT ANSWER=> skewed left"
"mean=median - CORRECT ANSWER=> symetric"
"mean < median - CORRECT ANSWER=> skewed right"
"What do the upper and lower fences do? - CORRECT ANSWER=> they determine outliers"
"What is the classic five number summary in stat? - CORRECT ANSWER=>
min,q1.median,q3,max,mean"
"what does it mean if a value is in the pth percentile? - CORRECT ANSWER=> p= the percent of the
population which is lower/below the given value"
"Cumulative Relative frequency graph - CORRECT ANSWER=> -connects to the percents of a
distribution"
"what do z scores tell us? - CORRECT ANSWER=> -how many standard deviations away a value is from
the mean"
"z score formula - CORRECT ANSWER=> (value-mean)/standard deviation"
"How does transforming data through addition and subtraction (adding or subtracting the same number
from each data point) affect the distribution and measures? - CORRECT ANSWER=> -centers: they will
shift, original value+/- the constant
-spread measures: they will stay the same
-shape: stays the same"
