Examlex
Entropy: The entropy of an isolated system must be conserved, so it never changes.
Stratified Random Sampling
A statistical sampling method that divides the population into smaller groups, or strata, and randomly samples from each group to ensure representation across key variables.
Sampling Bias
A systematic error that occurs when a sample is not representative of the population from which it is drawn, leading to skewed and unreliable results.
Sampling Error
The error caused by observing a sample instead of the whole population, leading to a difference between the sample statistic and the population parameter.
Population Parameters
Quantitative characteristics of a population, such as mean or standard deviation, derived from measurements of the individuals within the population.
Q5: What occurs to current flow (amperes) and
Q6: Escape speed: What is the ratio of
Q7: Energy in capacitors: A 1.0 μF capacitor
Q8: Calorimetry: How many grams of ice at
Q17: Weight and g: An object drops a
Q20: Dielectrics: A parallel-plate capacitor has a capacitance
Q21: Types of thermodynamic processes: The process shown
Q45: Weight and g: The radius of the
Q98: Conduction of heat: A heat conducting rod,
Q115: Molecular speeds: An ideal gas is kept