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GATE 2024 XH5 (Psychology) – Question 36

Research Methods and Statistics · Statistics in Psychology: Central tendency and dispersion, normal probability curve, parametric and non-parametric tests, effect size and power analysis · 1 mark · Multiple choice

Percentage of scores between the mean and ± 1 standard deviation in a normal distribution is closest to

  1. 68%
  2. 34%
  3. 95%
  4. 99%

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Show answer and explanation

Correct answer: (A) 68%

Explanation

About 68% of scores lie within one standard deviation either side of the mean (34% on each side).