DH 202 ALL QUIZZES QUESTIONS AND VERIFIED
ANSWERS
Standard deviation measures:
Both dispersion and spread of data
Central tendency to data
Dispersion of data
Spread of data
Both dispersion and spread of data
what percentage of data will fall within 1 standard deviation of the mean?
68%
99.7%
95%
34.5%
68%
Alpha value sets the significance level of when the null should be rejected
True
False
True
P-value represents the likelihood that statistics will occur due to chance
True
False
True
If p-value<alpha, we should reject the null hypothesis
True
False
True
,which term shows how many standard deviations a given raw score is above or below
the mean?
Z-score
F-ratio
Variance
Average deviation
Z-score
which of the following are numeric data counted in terms of whole numbers?
Discrete
Continuous
Categorical
Dichotomous
Discrete
this scale of measurement shows the distance between 2 values as =, with no absolute
value.
Interval
Nominal
Ordinal
Ratio
Interval
which scale of measurement is not used in oral health research?
Interval
Nominal
Ordinal
Ratio
Interval
which type of statistic will compare group, test a hypothesis and make predictions?
Inferential
Descriptive
Correlative
Observational
Inferential
, What happens when your square a negative integer?
A positive number is created
A negative integer remains
A positive number is created
P-value determines the probability of the null hypothesis being true
True
False
True
What does a p-value of 0.01 mean?
1:100 will produce the same research results
1:10 will produce the same research results
1:1000 will produce the same research results
1:99 will produce the same research results
1:100 will produce the same research results
which of the following demonstrates the strongest correlation coefficient?
-0.7
-0.1
0.6
0.2
-0.7
Inter-rater reliability is when test administration is consistent from a single examiner
True
False
False
What type of sampling would give a researcher the most valid and reliable research
results?
Random
Systematic
Stratified
Convenience
ANSWERS
Standard deviation measures:
Both dispersion and spread of data
Central tendency to data
Dispersion of data
Spread of data
Both dispersion and spread of data
what percentage of data will fall within 1 standard deviation of the mean?
68%
99.7%
95%
34.5%
68%
Alpha value sets the significance level of when the null should be rejected
True
False
True
P-value represents the likelihood that statistics will occur due to chance
True
False
True
If p-value<alpha, we should reject the null hypothesis
True
False
True
,which term shows how many standard deviations a given raw score is above or below
the mean?
Z-score
F-ratio
Variance
Average deviation
Z-score
which of the following are numeric data counted in terms of whole numbers?
Discrete
Continuous
Categorical
Dichotomous
Discrete
this scale of measurement shows the distance between 2 values as =, with no absolute
value.
Interval
Nominal
Ordinal
Ratio
Interval
which scale of measurement is not used in oral health research?
Interval
Nominal
Ordinal
Ratio
Interval
which type of statistic will compare group, test a hypothesis and make predictions?
Inferential
Descriptive
Correlative
Observational
Inferential
, What happens when your square a negative integer?
A positive number is created
A negative integer remains
A positive number is created
P-value determines the probability of the null hypothesis being true
True
False
True
What does a p-value of 0.01 mean?
1:100 will produce the same research results
1:10 will produce the same research results
1:1000 will produce the same research results
1:99 will produce the same research results
1:100 will produce the same research results
which of the following demonstrates the strongest correlation coefficient?
-0.7
-0.1
0.6
0.2
-0.7
Inter-rater reliability is when test administration is consistent from a single examiner
True
False
False
What type of sampling would give a researcher the most valid and reliable research
results?
Random
Systematic
Stratified
Convenience
