Control group receives no experimental treatment, while experimental group receives manipulation. Control group serves as baseline for comparing experimental group changes. Both groups are identical except for experimental manipulation. Participants are randomly assigned to either group
Measurement error is called experimental or observational error. There are two main types: random and systematic error. Random error varies unpredictably, while systematic error remains constant
Social experiments observe people's reactions to situations and events. Participants are divided into active participants and respondents. Experiments are conducted in controlled environments like laboratories. Most subjects remain unaware of being part of the experiment
Experimental design aims to describe and explain information variation under hypothesized conditions. Design involves selecting independent, dependent, and control variables. Experiments predict outcomes by changing preconditions through independent variables. Control variables must be held constant to prevent external factors affecting results
Oscilloscope measures voltage changes over time using voltage vs time graph. Oscilloscopes come in analog and digital varieties with similar controls. Basic controls include volts/div, time/div, vertical/horizontal position, and trigger level
Materials and methods section follows literature review in research papers. Section should describe research procedures and experimental details. Structure varies by discipline, best learned from published papers