distributions

• What is a normal distribution?


  A normal distribution is symmetrical with a bell-shaped curve.
• What do the mean, median, and mode represent in a normal distribution?


  In a normal distribution, the mean, median, and mode are all the same.
• What is a skewed distribution?


  • A distribution where values are clustered at one end.
  • Can be positive (tail on the left) or negative (tail on the right).
• What characterizes a positive skewed distribution?


  In a positive skewed distribution, the mode is lower than the mean and median.
• What characterizes a negative skewed distribution?


  In a negative skewed distribution, the mode is higher than the mean and median.
• What is the purpose of measures of dispersion in data analysis?


  To describe how much scores vary from the mean