BQA 3123 Test 1 MS State Dr. Ballard
2024/2025 Exam Questions and Answers
100% Guaranteed Success | Already
Rated A+
Central Tendency - 🧠ANSWER ✔✔Tendency of data to revolve around the
middle. It will cluster around certain values.
Mean - 🧠ANSWER ✔✔Average
Mode - 🧠ANSWER ✔✔Most. Might not have one. It is a supplemental
value.
Median - 🧠ANSWER ✔✔Middle after put in order
If mean is less than median - 🧠ANSWER ✔✔Negative Skewed Distribution
If mean is greater than median - 🧠ANSWER ✔✔Positive Skewed
Distribution
If mean is equal to median - 🧠ANSWER ✔✔Symmetrical distribution
What influences the mean? - 🧠ANSWER ✔✔Outliers or extreme values
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, Range - 🧠ANSWER ✔✔A measure of variability/spread/dispersion
Limitation of the range - 🧠ANSWER ✔✔It only uses two values.
Specifically, max and min
Emperical Rule - 🧠ANSWER ✔✔Is used when we have mound-shaped
and symmetric distribution and it allows us to say about 68% of data will fall
within one st. dev from the mean, 95% within two st. dev, and 99.7% within
three st. dev.
Normal Distribution - 🧠ANSWER ✔✔Mound-shaped, symmetric, bell curve
area under the curve of 1. Can use area in terms of probability.
Chebyshev's Rule - 🧠ANSWER ✔✔Is used when we do not know anything
about the distribution of the data and claims at least 3 (75%) of the data will
fall within 2 st. dev from the mean.
Z-score - 🧠ANSWER ✔✔Tells us how many st. dev above or below the
mean
Two reasons for using Z-scores - 🧠ANSWER ✔✔The shape of the z-
scores distribution will be the same as the original distribution of the
raw/original score. They will tell us the exact location of the original score
within the distribution.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions and Answers
100% Guaranteed Success | Already
Rated A+
Central Tendency - 🧠ANSWER ✔✔Tendency of data to revolve around the
middle. It will cluster around certain values.
Mean - 🧠ANSWER ✔✔Average
Mode - 🧠ANSWER ✔✔Most. Might not have one. It is a supplemental
value.
Median - 🧠ANSWER ✔✔Middle after put in order
If mean is less than median - 🧠ANSWER ✔✔Negative Skewed Distribution
If mean is greater than median - 🧠ANSWER ✔✔Positive Skewed
Distribution
If mean is equal to median - 🧠ANSWER ✔✔Symmetrical distribution
What influences the mean? - 🧠ANSWER ✔✔Outliers or extreme values
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, Range - 🧠ANSWER ✔✔A measure of variability/spread/dispersion
Limitation of the range - 🧠ANSWER ✔✔It only uses two values.
Specifically, max and min
Emperical Rule - 🧠ANSWER ✔✔Is used when we have mound-shaped
and symmetric distribution and it allows us to say about 68% of data will fall
within one st. dev from the mean, 95% within two st. dev, and 99.7% within
three st. dev.
Normal Distribution - 🧠ANSWER ✔✔Mound-shaped, symmetric, bell curve
area under the curve of 1. Can use area in terms of probability.
Chebyshev's Rule - 🧠ANSWER ✔✔Is used when we do not know anything
about the distribution of the data and claims at least 3 (75%) of the data will
fall within 2 st. dev from the mean.
Z-score - 🧠ANSWER ✔✔Tells us how many st. dev above or below the
mean
Two reasons for using Z-scores - 🧠ANSWER ✔✔The shape of the z-
scores distribution will be the same as the original distribution of the
raw/original score. They will tell us the exact location of the original score
within the distribution.
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
