Statistics Review

What is the shape of the distribution?

• Symmetric

• Left-skewed

• Right-skewed

• Uniform

What is the shape of the distribution?

• Symmetric

• Lef-skewed

• Right-skewed

• Uniform

What is the shape of the distribution?

• Symmetric

• Left-skewed

• Right-skewed

• Uniform

Type of Data arrangement

• Symmetrical
• Hairline
• Skewed Right
• Skewed Left

What is the shape of the distribution?

• Skewed Left 
• Skewed Right
• Symmetric
• Bimodal

The box-and-whisker plots below show the scores earned by 6^th and 7^th graders on a year-end reading test.  

Which statement is best supported by the box-and-whisker plots?

• The range of the 7^th grade scores is greater than the range of the 6^th grade scores.

• The median of the 6^th grade scores is greater than the median of the 7^th grade scores.

• The mean of the 7^th grade scores is less than the mean of the 6^th grade scores.

• The number of 6^th graders who took the test is greater than the number of 7^th graders who took the test.

The dot plots below show the number of customers at Mr. Burger and Mr. Chicken during rush hour over the course of 10 days.  

                          Which statement correctly compares the distribution of the number of customers at each restaurant during rush hour?

• Mr. Burger's number of customers during rush hour, is greater than Mr. Chicken's number of customers during rush hour.

• Mr. Burger's median number of customers during rush hour, is greater than Mr. Chicken's median number of customers during rush hour.

• There is more variability in Mr. Chicken's number of customers during rush hour, than Mr. Burger's number of customers during rush hour.

• There is less variability in Mr. Chicken's number of customers during rush hour, than Mr. Burger's number of customers during rush hour.

Given the following distributions, which has the smallest IQR?

• Red

• Purple

• Black

Given the following distributions, which has the highest median?

• Red

• Purple

• Black

Given the following distributions, which is symmetric?

• Red

• Purple

• Black