BESC 3010 FINAL EXAM UPDATED QUESTIONS AND
ANSWERS
Mean (6 Questions) (most affected by) - CORRECT ANSWER✅✅✅Most affected by outliers
Mean (needs at least) - CORRECT ANSWER✅✅✅Needs at least interval
Median (least affected by) - CORRECT ANSWER✅✅✅Least affected by outliers
Median (needs at least) - CORRECT ANSWER✅✅✅Needs at least ordinal
Mode (Needs at least) - CORRECT ANSWER✅✅✅Needs at least nominal
Variance (5 Questions) (If low, then) - CORRECT ANSWER✅✅✅If low, then individuals in data set are
very similar
Range - CORRECT ANSWER✅✅✅Most sensitive to extreme scores
Standard Deviation (Sample vs. Population) - CORRECT ANSWER✅✅✅Sample SD underestimates
Population SD
Standard Deviation (If use the wrong formula) - CORRECT ANSWER✅✅✅Will be too small if the
using the wrong formula
Standard Deviation (If numbers are very different, then) - CORRECT ANSWER✅✅✅If numbers are
very different, then SD will be high
Z Scores (7 Questions) (Range) - CORRECT ANSWER✅✅✅-3 to 3
Z scores (Closest to the mean=) - CORRECT ANSWER✅✅✅Closest to mean=0
, Z scores (NEW MEAN) - CORRECT ANSWER✅✅✅If data set is converted to z score, the new mean=0
Z score (NEW SD) - CORRECT ANSWER✅✅✅If data set is converted to z score, the new SD=1
Independent Variable (3 questions) - CORRECT ANSWER✅✅✅Is the manipulation
Dependent Variable - CORRECT ANSWER✅✅✅Is the outcome
Sampling Distributions - CORRECT ANSWER✅✅✅Can be calculated for any statistic
Central Limit Theorem - CORRECT ANSWER✅✅✅The sampling distribution of the mean will
approach the normal distribution as n increases (n>30).
Z Test (Use when you know what) - CORRECT ANSWER✅✅✅Use when you know population mean &
variance
Z Test(Use What) - CORRECT ANSWER✅✅✅Use Cohen's d and Z Distribution
z score formula - CORRECT ANSWER✅✅✅z = (x - m)/standard devation
confidence interval (Larger n and Smaller n) - CORRECT ANSWER✅✅✅Larger n= Narrow and Smaller
n= Wider
Hypothesis testing (Test of Significance) Observed vs Critical, Alpha vs P value - CORRECT
ANSWER✅✅✅Observed > Critical and Alpha > P value, then you REJECT
hypothesis testing (null=) - CORRECT ANSWER✅✅✅Null= no difference
ANSWERS
Mean (6 Questions) (most affected by) - CORRECT ANSWER✅✅✅Most affected by outliers
Mean (needs at least) - CORRECT ANSWER✅✅✅Needs at least interval
Median (least affected by) - CORRECT ANSWER✅✅✅Least affected by outliers
Median (needs at least) - CORRECT ANSWER✅✅✅Needs at least ordinal
Mode (Needs at least) - CORRECT ANSWER✅✅✅Needs at least nominal
Variance (5 Questions) (If low, then) - CORRECT ANSWER✅✅✅If low, then individuals in data set are
very similar
Range - CORRECT ANSWER✅✅✅Most sensitive to extreme scores
Standard Deviation (Sample vs. Population) - CORRECT ANSWER✅✅✅Sample SD underestimates
Population SD
Standard Deviation (If use the wrong formula) - CORRECT ANSWER✅✅✅Will be too small if the
using the wrong formula
Standard Deviation (If numbers are very different, then) - CORRECT ANSWER✅✅✅If numbers are
very different, then SD will be high
Z Scores (7 Questions) (Range) - CORRECT ANSWER✅✅✅-3 to 3
Z scores (Closest to the mean=) - CORRECT ANSWER✅✅✅Closest to mean=0
, Z scores (NEW MEAN) - CORRECT ANSWER✅✅✅If data set is converted to z score, the new mean=0
Z score (NEW SD) - CORRECT ANSWER✅✅✅If data set is converted to z score, the new SD=1
Independent Variable (3 questions) - CORRECT ANSWER✅✅✅Is the manipulation
Dependent Variable - CORRECT ANSWER✅✅✅Is the outcome
Sampling Distributions - CORRECT ANSWER✅✅✅Can be calculated for any statistic
Central Limit Theorem - CORRECT ANSWER✅✅✅The sampling distribution of the mean will
approach the normal distribution as n increases (n>30).
Z Test (Use when you know what) - CORRECT ANSWER✅✅✅Use when you know population mean &
variance
Z Test(Use What) - CORRECT ANSWER✅✅✅Use Cohen's d and Z Distribution
z score formula - CORRECT ANSWER✅✅✅z = (x - m)/standard devation
confidence interval (Larger n and Smaller n) - CORRECT ANSWER✅✅✅Larger n= Narrow and Smaller
n= Wider
Hypothesis testing (Test of Significance) Observed vs Critical, Alpha vs P value - CORRECT
ANSWER✅✅✅Observed > Critical and Alpha > P value, then you REJECT
hypothesis testing (null=) - CORRECT ANSWER✅✅✅Null= no difference
