This fact is from Biostatistics in Public Health Dentistry. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Mean = average of all values
Median = middle value when arranged in order
Mode = most frequently occurring value
Standard deviation: 1SD = 68 percent, 2SD = 95 percent, 3SD = 99.7 percent
Chi-square test = categorical data association
Student t-test = comparing means of 2 groups
ANOVA = comparing means of more than 2 groups