Statistics in Real-World Contexts

A study compares the test scores of two different classes. Class A has a mean score of 85 with a standard deviation of 5, while Class B has a mean score of 80 with a standard deviation of 10. Which class has more variability in test scores?

• Class A

• Class B

• Both have the same variability

• Cannot be determined

Tags

CCSS.7.SP.B.4

In a dataset, the median is 50, and the mean is 55. What can be inferred about the shape of the data distribution?

• The distribution is symmetric

• The distribution is skewed to the right

• The distribution is skewed to the left

• The distribution is uniform

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

A survey records the favorite fruit of students in a class. The results are summarized in a two-way frequency table. What type of data is being summarized?

• Quantitative data

• Categorical data

• Continuous data

• Discrete data

A scatter plot shows a positive linear relationship between hours studied and test scores. Which of the following best describes this relationship?

• As hours studied increase, test scores decrease

• As hours studied increase, test scores increase

• There is no relationship between hours studied and test scores

• Test scores are constant regardless of hours studied

Tags

CCSS.HSF.LE.B.5

Tags

CCSS.HSF.LE.B.5

Two datasets have the same mean but different standard deviations. What does this indicate about the datasets?

• They have the same variability

• They have different variability

• They have the same shape

• They have different shapes

A dataset has a mean of 60 and a median of 70. What does this suggest about the distribution of the data?

• The distribution is symmetric

• The distribution is skewed to the left

• The distribution is skewed to the right

• The distribution is uniform

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

In a two-way frequency table, what does a joint relative frequency represent?

• The frequency of a single category

• The frequency of two categories occurring together

• The total frequency of all categories

• The frequency of one category divided by the total frequency

Tags

CCSS.8.SP.A.4

A scatter plot shows a cluster of points forming a downward trend. What type of correlation does this indicate?

• Positive correlation

• Negative correlation

• No correlation

• Perfect correlation

Tags

CCSS.HSS.ID.B.5

Tags

CCSS.HSF.LE.B.5