Statistics Quiz show

What is the mean of the following data set: 4, 8, 6, 5, 3?

• 4

• 5.2

• 6

• 7

Which measure of central tendency is most affected by outliers?

• Mean

• Median

• Mode

• Range

What is the median of the data set: 1, 3, 3, 6, 7, 8, 9?

• 3

• 6

• 7

• 4

In a normal distribution, what percentage of data falls within one standard deviation of the mean?

• 50%

• 68%

• 95%

• 99.7%

What does a p-value indicate in hypothesis testing?

• Probability of rejecting the null hypothesis

• Probability of the null hypothesis being true

• Effect size of a treatment

• Confidence level

Which of the following is a discrete random variable?

• Height of students

• Temperature

• Number of cars in a parking lot

• Time taken to run a mile

What is the range of the data set: 2, 5, 7, 10?

• 5

• 7

• 8

• 12

If a coin is flipped 10 times, what is the probability of getting exactly 5 heads?

• 0.246

• 0.5

• 0.625

• 0.890

What is the mode of the following data set: 3, 5, 7, 7, 2, 5, 5?

• 3

• 5

• 7

• 2

What is the standard deviation of the data set: 2, 4, 4, 4, 5, 5, 7, 9?

• 2

• 1.5

• 1.25

• 3