Ost Statistics

This box plot displays information about the number of text messages some students sent one day. What is the IQR (interquartile range)?

• 10

• 20

• 14

• 26

Here’s a dot plot of a data set. Which statement is true about the mean of the data set?

• The mean is less than 5.

• The mean is equal to 5.

• The mean is greater than 5.

• There is not enough information to determine the mean.

The air quality was tested in many office buildings in two cities. The results of the testing is shown in these box plots. A level of less than 50 parts per million is considered healthy. A level of 50 or more parts per million is considered unhealthy. Select all the statements that must be true.

• The lowest recorded measurement was in city Q.

• All buildings tested in city P are in the healthy range.

• The mean for city P is greater than the mean for city Q.

• The range for city Q is greater than the range for city P.

• The median for city P is greater than the median for city Q.

This box plot displays information about the number of text messages some students sent one day. What is the median number of texts sent by students?

• 10

• 20

• 14

• 26

• A
• B
• C
• D

Describes a distribution of data that is distorted or non-symmetrical when graphed. The data appears shifted to the left or to the right.

• Approximately Symmetrical

• Uniform

• Skewed

• Symmetrical

When MOST of the data is clustered near the LESSER values, the data is considered to be

• Skewed Right

• Skewed Left

• Skewed High

• Skewed Low

The data is SKEWED to the RIGHT?

¿Los datos estan sesgados a la derecha?

• true

  verdadero

• false

  falso

What is the distribution of the data?

• skewed right

• skewed left

• symmetric

• stairsteps

What is the mean of the following set of numbers: 4, 8, 12, 16, 20?

Mathematical Equivalence

ON