WGU D772 Statistical Data Literacy
OA EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Statistical Data Literacy - ANSWER ✔ To help you read, question, and use
statistics wisely by checking credibility, interpreting graphs, and applying
probability.
2. Competencies in D772 - ANSWER ✔ 1) Determining credibility of research
and data, 2) Interpreting data using statistics and graphs, 3) Applying
probability principles.
3. Determining Credibility of Data - ANSWER ✔ Evaluating whether data is
biased, reliable, and collected correctly.
4. Interpreting Data Using Statistics and Graphs - ANSWER ✔ Reading and
explaining charts, measuring center/spread, and identifying outliers.
5. Applying Probability - ANSWER ✔ Using probability rules, expected value,
and chance to make real-world decisions.
,6. Detective-style question - ANSWER ✔ "Where did this number come from,
and does it really mean what they say it means?"
7. population - ANSWER ✔ an entire group of individuals or objects that you
want to study
8. sample - ANSWER ✔ a smaller, more manageable group selected from the
population to represent the larger group
9. parameter - ANSWER ✔ a numerical value describing an entire population's
characteristics
10.statistic - ANSWER ✔ a numerical value that describes a characteristic of a
sample
11.individuals - ANSWER ✔ persons or objects described by a set of data
12.variables - ANSWER ✔ characteristics or measurements that we are
interested in studying
13.quantitative variables - ANSWER ✔ numerical measurements, such as age,
height, weight, or income
14.categorical variables - ANSWER ✔ categories or labels, such as hair color,
occupation, or favorite type of food
,15.symmetric distribution - ANSWER ✔ data set where if a line were drawn
through the middle of the distribution, the two sides would appear
approximately as mirror images
16.unimodal - ANSWER ✔ distribution that has one mode around which the
observations are concentrated
17.bimodal - ANSWER ✔ distribution that has two modes around which the
observations are concentrated
18.uniform - ANSWER ✔ distribution that is approximately flat, with no
modes, in which the observations are roughly equally (or uniformly)
distributed among the different values
19.skewness - ANSWER ✔ a property of a distribution in which one tail of the
data is significantly longer than the other
20.skewed distribution - ANSWER ✔ distribution is said to be skewed when
the data points are stretched further on one side of the distribution, creating a
curve that is not symmetric
21.skewed-right - ANSWER ✔ distribution where the right tail (larger values)
is much longer than the left tail (smaller values)
22.skewed-left - ANSWER ✔ distribution where the left tail (smaller values) is
much longer than the right tail (larger values)
, 23.normal distributions - ANSWER ✔ distribution that occurs frequently in
nature, science, and mathematics that are unimodal, symmetric, and roughly
bell-shaped
24.Mean - ANSWER ✔ All numbers added together, divided by the amount of
numbers that are added.
25.Median - ANSWER ✔ sort all numbers, least to greatest. If n is an odd
number, the median is the middle value of the ordered data. If n is an even
number, the median is the average of the two values closest to the middle in
the ordered data.
26.Mode - ANSWER ✔ the number or numbers of the highest frequency. (most
common)
27.Quartiles - ANSWER ✔ the median= Q2 (Quartile 2), the median of the first
half= Q1, the median of the second half= Q3.
28.Range - ANSWER ✔ maximum # - minimum #
29.Interquartile range (IQR) - ANSWER ✔ Q3-Q1=IQR
30.representative sample - ANSWER ✔ an unbiased sample, is a subset of the
population that accurately reflects the characteristics of the larger group
31.non-representative sample - ANSWER ✔ a biased sample, fails to accurately
reflect the population
OA EXAM STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. Statistical Data Literacy - ANSWER ✔ To help you read, question, and use
statistics wisely by checking credibility, interpreting graphs, and applying
probability.
2. Competencies in D772 - ANSWER ✔ 1) Determining credibility of research
and data, 2) Interpreting data using statistics and graphs, 3) Applying
probability principles.
3. Determining Credibility of Data - ANSWER ✔ Evaluating whether data is
biased, reliable, and collected correctly.
4. Interpreting Data Using Statistics and Graphs - ANSWER ✔ Reading and
explaining charts, measuring center/spread, and identifying outliers.
5. Applying Probability - ANSWER ✔ Using probability rules, expected value,
and chance to make real-world decisions.
,6. Detective-style question - ANSWER ✔ "Where did this number come from,
and does it really mean what they say it means?"
7. population - ANSWER ✔ an entire group of individuals or objects that you
want to study
8. sample - ANSWER ✔ a smaller, more manageable group selected from the
population to represent the larger group
9. parameter - ANSWER ✔ a numerical value describing an entire population's
characteristics
10.statistic - ANSWER ✔ a numerical value that describes a characteristic of a
sample
11.individuals - ANSWER ✔ persons or objects described by a set of data
12.variables - ANSWER ✔ characteristics or measurements that we are
interested in studying
13.quantitative variables - ANSWER ✔ numerical measurements, such as age,
height, weight, or income
14.categorical variables - ANSWER ✔ categories or labels, such as hair color,
occupation, or favorite type of food
,15.symmetric distribution - ANSWER ✔ data set where if a line were drawn
through the middle of the distribution, the two sides would appear
approximately as mirror images
16.unimodal - ANSWER ✔ distribution that has one mode around which the
observations are concentrated
17.bimodal - ANSWER ✔ distribution that has two modes around which the
observations are concentrated
18.uniform - ANSWER ✔ distribution that is approximately flat, with no
modes, in which the observations are roughly equally (or uniformly)
distributed among the different values
19.skewness - ANSWER ✔ a property of a distribution in which one tail of the
data is significantly longer than the other
20.skewed distribution - ANSWER ✔ distribution is said to be skewed when
the data points are stretched further on one side of the distribution, creating a
curve that is not symmetric
21.skewed-right - ANSWER ✔ distribution where the right tail (larger values)
is much longer than the left tail (smaller values)
22.skewed-left - ANSWER ✔ distribution where the left tail (smaller values) is
much longer than the right tail (larger values)
, 23.normal distributions - ANSWER ✔ distribution that occurs frequently in
nature, science, and mathematics that are unimodal, symmetric, and roughly
bell-shaped
24.Mean - ANSWER ✔ All numbers added together, divided by the amount of
numbers that are added.
25.Median - ANSWER ✔ sort all numbers, least to greatest. If n is an odd
number, the median is the middle value of the ordered data. If n is an even
number, the median is the average of the two values closest to the middle in
the ordered data.
26.Mode - ANSWER ✔ the number or numbers of the highest frequency. (most
common)
27.Quartiles - ANSWER ✔ the median= Q2 (Quartile 2), the median of the first
half= Q1, the median of the second half= Q3.
28.Range - ANSWER ✔ maximum # - minimum #
29.Interquartile range (IQR) - ANSWER ✔ Q3-Q1=IQR
30.representative sample - ANSWER ✔ an unbiased sample, is a subset of the
population that accurately reflects the characteristics of the larger group
31.non-representative sample - ANSWER ✔ a biased sample, fails to accurately
reflect the population
