BIOSTATISTICS EXAMS SCRIPT 2026/2027 QUESTIONS
AND SOLUTIONS RATED A+
✔✔Mode is the value that occurs most often and can describe ____________ kinds of
data. - ✔✔all
✔✔Measures of dispersion measure - ✔✔variability
✔✔Measures of dispersion communicates how much ___________ is present in a
group of data. - ✔✔variation
✔✔Measures of dispersion include _____________, _____________,
______________ - ✔✔Range, Variance, and Standard deviation
✔✔Range is the ___________ and least helpful measurement and usually reported with
__________ - ✔✔simplest & median
✔✔Variance represents the _________________ distance of each score of the mean. -
✔✔average
✔✔Standard deviation is the square root of the ___________ - ✔✔variance
✔✔Standard deviation is the most ____________ and __________ measures of
dispersion. - ✔✔common & useful
✔✔Standard deviation is usually report with the ______ to calculate data intervals. -
✔✔mean
✔✔Normal distribution is a _____________ - ✔✔Bell-Curve
✔✔most occurrences in the world fall into a - ✔✔Bell- curve
✔✔A bell curve explains why most random variables tend to be distributed __________
- ✔✔Normally
✔✔A bell curve is when _______, _________, ___________ are in equal value -
✔✔mean median and mode
✔✔Central limit theorem is when less sampling error occurs because of a
______________ sample size. 30 or more will estimate the population ___________ -
✔✔large, accurately
, ✔✔Skewed Distribution is when the distribution of scores is _________ -
✔✔asymmetrical
✔✔Skewing is caused by a few ____________ scores - ✔✔extreme
✔✔A skew score can be identified by comparing the _____________- and
___________ - ✔✔mean and median
✔✔Positive Skew - ✔✔
✔✔Negative Skew - ✔✔
✔✔Frequency distribution tables present data in a way that shows the number of times
each score occures in the ________ - ✔✔group
✔✔Frequency distribution tables facilitates our ________ and ____________ of data -
✔✔understanding and interpretation
✔✔Graphs are ___________ representing data Also called a _______. Shows a
comparison with one or more other variables. - ✔✔pictures, Chart
✔✔Advantages of graphing data are effectiveness and economic communication of
data, easier and quicker understanding and interpretation of data, and the ability to -
✔✔compare multiple distributions
✔✔Bar graphs are used to represent ________________ data - ✔✔Categorical
✔✔Spaces separate bars to emphasize ________________ nature of the variables -
✔✔discrete
✔✔Length of the bar corresponds with the ___________- of the value - ✔✔frequency
✔✔Histogram is like a bar graph but bars ___________ - ✔✔touch
✔✔Histograms are used for interval or ratio ______________ - ✔✔variables
✔✔Frequency polygon is a line graph that represents the _____________ of data that
are continuous in nature. - ✔✔frequency
✔✔Frequency polygon is drawn by connecting the mid points of _____________ of a
histogram - ✔✔Bars
AND SOLUTIONS RATED A+
✔✔Mode is the value that occurs most often and can describe ____________ kinds of
data. - ✔✔all
✔✔Measures of dispersion measure - ✔✔variability
✔✔Measures of dispersion communicates how much ___________ is present in a
group of data. - ✔✔variation
✔✔Measures of dispersion include _____________, _____________,
______________ - ✔✔Range, Variance, and Standard deviation
✔✔Range is the ___________ and least helpful measurement and usually reported with
__________ - ✔✔simplest & median
✔✔Variance represents the _________________ distance of each score of the mean. -
✔✔average
✔✔Standard deviation is the square root of the ___________ - ✔✔variance
✔✔Standard deviation is the most ____________ and __________ measures of
dispersion. - ✔✔common & useful
✔✔Standard deviation is usually report with the ______ to calculate data intervals. -
✔✔mean
✔✔Normal distribution is a _____________ - ✔✔Bell-Curve
✔✔most occurrences in the world fall into a - ✔✔Bell- curve
✔✔A bell curve explains why most random variables tend to be distributed __________
- ✔✔Normally
✔✔A bell curve is when _______, _________, ___________ are in equal value -
✔✔mean median and mode
✔✔Central limit theorem is when less sampling error occurs because of a
______________ sample size. 30 or more will estimate the population ___________ -
✔✔large, accurately
, ✔✔Skewed Distribution is when the distribution of scores is _________ -
✔✔asymmetrical
✔✔Skewing is caused by a few ____________ scores - ✔✔extreme
✔✔A skew score can be identified by comparing the _____________- and
___________ - ✔✔mean and median
✔✔Positive Skew - ✔✔
✔✔Negative Skew - ✔✔
✔✔Frequency distribution tables present data in a way that shows the number of times
each score occures in the ________ - ✔✔group
✔✔Frequency distribution tables facilitates our ________ and ____________ of data -
✔✔understanding and interpretation
✔✔Graphs are ___________ representing data Also called a _______. Shows a
comparison with one or more other variables. - ✔✔pictures, Chart
✔✔Advantages of graphing data are effectiveness and economic communication of
data, easier and quicker understanding and interpretation of data, and the ability to -
✔✔compare multiple distributions
✔✔Bar graphs are used to represent ________________ data - ✔✔Categorical
✔✔Spaces separate bars to emphasize ________________ nature of the variables -
✔✔discrete
✔✔Length of the bar corresponds with the ___________- of the value - ✔✔frequency
✔✔Histogram is like a bar graph but bars ___________ - ✔✔touch
✔✔Histograms are used for interval or ratio ______________ - ✔✔variables
✔✔Frequency polygon is a line graph that represents the _____________ of data that
are continuous in nature. - ✔✔frequency
✔✔Frequency polygon is drawn by connecting the mid points of _____________ of a
histogram - ✔✔Bars
