PSYC2001 HD Note Summary Quiz

What is the primary use of inferential statistics?

• To describe a sample

• To make information about population parameters

• To collect data

• To visualize data

What must a sample be in order to effectively use inferential statistics?

• Large

• Random

• Representative of the population

• Homogeneous

What can inferential statistics be used for regarding population parameters?

• To visualize them

• To ignore them

• To estimate them or decide on statements about them

• To collect them

What is the purpose of constructing a confidence interval in statistics?

• To estimate a population parameter

• To test a hypothesis

• To calculate the mean

• To determine the sample size

What does the Central Limit Theorem state about the sampling distribution of the mean?

• It becomes a normal distribution as n increases

• It remains skewed regardless of n

• It becomes a uniform distribution

• It becomes a bimodal distribution

What is the standard error in statistics?

• The standard deviation of the mean

• The mean of the sample

• The variance of the sample

• The median of the sample

What is the process of hypothesis testing used for in statistics?

• To make a decision about a population parameter

• To calculate the sample mean

• To determine the sample size

• To estimate the population variance

What is the formula for the standard error of the mean?

• \( \sigma_M = \sigma \times n \)

What does the area under the curve in a sampling distribution represent?

• The total number of samples

• The proportion of cases in a particular range of scores

• The mean of the distribution

• The standard deviation of the population

Which of the following is true about a normal distribution?

• It is skewed to the right

• Mean is at the center

• It is skewed to the left

• Mean is at the extreme end