Diagnostic Test in Statistics and Probability

In the data set below, what is the mean absolute deviation?

6, 5, 7, 2, 4, 8

• 1.70

• 1.71

• 1.72

• 1.73

The following table shows the number of visitors to a museum. If the outlier numbers are not included, what is the mean number of visitors every day?

• 287.5

• 260.8

Consider the following table which shows the number of boys and girls who participated in different sports in a college event. What percentage of boys participated in baseball?

• 27.27%

• 34%

• 38.72%

• 62.96%

The following graph shows how much money Annie had for a month. What type of correlation does the data in the above graph represent?

• Negative

• Positive

If random selection occurred only among male students that had an excellent academic background, what type of sampling is this?

• Random Samples

• Stratified Samples

• Cluster Samples

• Snowball Samples

A research survey was conducted to know the opinion of students about new policies implemented by the college administration. The survey had a confidence level of 95% with a margin of error of 2. Also, 20% of students supported the policies. How many students were surveyed?

Mary went to buy a frame. She shortlisted five frames and she had to select one of them. What is the probability of getting a frame with a prime number?

Does the following scattered graph show a positive, negative, or no trend?

• positive

• negative

• no trend

John rolls two fair dice, one green, and one blue. Let A denote the event that the green die shows an even number. Let B denote the event that the blue die shows 5 or 6. Are events A and B dependent or independent?

• dependent

• independent

In a single throw of two fair dice, what is the probability that the sum of two dice will be 7, given that the two dice have the same outcome?

• 0%

• 25%

• 50%

• 75%