" PSY 202: Understanding Human Growth & Behavior –
Assessment"
descriptive statistics - answers✔✔organize, summarize, and describe a data set
inferential statistics - answers✔✔make inferences about populations based on samples
M - answers✔✔symbol for sample mean
S - answers✔✔symbol for sample standard deviation
(S)^2 - answers✔✔symbol for sample variance
p - answers✔✔symbol for population correlation
r - answers✔✔symbol for sample correlation
(E) sigma - answers✔✔symbol for summation
lower case Mu (u) - answers✔✔symbol for population mean
, mean - answers✔✔average of a data set
median - answers✔✔middle value when values are in order from smallest to largest in a data
set
mode - answers✔✔most common value, value you see the most in a data set
correlation coefficient - answers✔✔numerical value that describes the degree and direction of
a relationship between two variables
Pearson correlation - answers✔✔measures the degree and direction of a linear relationship
positive relationship - answers✔✔variables changing in the same direction; if one variable
increases then the other increases; what kind of relationship is this?
negative relationship - answers✔✔variables changing in the opposite direction; if one variable
increases, the other decreases; what kind of relationship is this?
no relationship or weak relationship - answers✔✔a 0 correlation coefficient means it has a
-.97, +.83, +.25, -.03 - answers✔✔put the correlation coefficients in order from strongest to
weakest: +.25, -.97, +.83, -.03
strong relationship - answers✔✔a correlation coefficient that is close to 1 means it has a
perfect relationship - answers✔✔a correlation coefficient of 1 means it has a
Assessment"
descriptive statistics - answers✔✔organize, summarize, and describe a data set
inferential statistics - answers✔✔make inferences about populations based on samples
M - answers✔✔symbol for sample mean
S - answers✔✔symbol for sample standard deviation
(S)^2 - answers✔✔symbol for sample variance
p - answers✔✔symbol for population correlation
r - answers✔✔symbol for sample correlation
(E) sigma - answers✔✔symbol for summation
lower case Mu (u) - answers✔✔symbol for population mean
, mean - answers✔✔average of a data set
median - answers✔✔middle value when values are in order from smallest to largest in a data
set
mode - answers✔✔most common value, value you see the most in a data set
correlation coefficient - answers✔✔numerical value that describes the degree and direction of
a relationship between two variables
Pearson correlation - answers✔✔measures the degree and direction of a linear relationship
positive relationship - answers✔✔variables changing in the same direction; if one variable
increases then the other increases; what kind of relationship is this?
negative relationship - answers✔✔variables changing in the opposite direction; if one variable
increases, the other decreases; what kind of relationship is this?
no relationship or weak relationship - answers✔✔a 0 correlation coefficient means it has a
-.97, +.83, +.25, -.03 - answers✔✔put the correlation coefficients in order from strongest to
weakest: +.25, -.97, +.83, -.03
strong relationship - answers✔✔a correlation coefficient that is close to 1 means it has a
perfect relationship - answers✔✔a correlation coefficient of 1 means it has a
