FoMeas vocab Exam 3

yuh

RSS

Residual Sum of Squares- used to measure the total squared differences between observed values and predicted values

df

Degrees of Freedom- Used to test hypothesis (n-1)

t

t-value- Used to determine if observed differences are due to random chance or if they’re statistically significant

C.V.

Coefficient of Variation- Compares the degree of variation between different data sets

n

Sample Size- how many individual values are in one dataset

𝑥̄

Sample Mean- Represents the average value of a sample, calculated by summing all observed values and dividing by the sample size

r²

Coefficient of Determination- used to asses the strength of a relationship between variables

TSS

Total Sum of Squares- Measures total variation in the dependent variable

Sₓ̄

Standard Error of the Mean- Estimates how much sample mean is likely to vary from the true population mean

N

Population size- the total number of observations/ data points in a population

Sx

Standard Deviation- measures the spread/dispersion of a set of data points in a sample

CI

confidence interval- says how precise the sample estimate is

SEE

Standard error of estimate- measures accuracy of predictions made by a regression model