Describing the Shape of Data Sets

Describing the shape of a data set that is a mirror image one both sides of the center point.

• symmetric

• unimodal

• skewed

• uniform

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the range of the heights?

• 13cm

• 14cm

• 164cm

• 330cm

Which histogram does not show the correct distribution shape?

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• 
• 
• 

Symmetrical, Skewed, and Uniform are used to describe the what of a distribution?

• Variability

• Center

• Shape

• Range

A data set has a mean of 10 and a median of 15. Which of the following statements is true?

• The data set is skewed right.

• The data set is skewed left.

• The data set is symmetric.

• The data set cannot be determined based on the given information.

If a distribution is skewed to the right with no outliers, 

• mean<median

• mean>median

• mean=median

• can not determine

Analyze the data sets. Describe the distribution of each data.

• Data Set A is skewed left and Data Set B is skewed right

• Both Data Set A and B are symmetric

• Data Set A is skewed right and Data Set B is symmetric

• Both Data Set A and B are skewed left

The features of this stemplot include...

• split stems

• back to back stemplot

• split stems and a back to back stemplot

• neither

Realtors collect data in order to serve their clients more effectively. In a recent week, data on the age of all homes sold in a particular area were collected and displayed in this histogram. Which of the following could be the median age?

• 29 years

• 19 years

• 39 years

• 34 years

• 24 years

The students in Mr. Tyson’s high school statistics class were recently asked if they would prefer a pasta party, a pizza party, or a donut party. The following bar graph displays the data. This graph is misleading because

• the bars should be arranged in decreasing order by height.

• the vertical axis scale should start at 0.

• there should not be gaps between the bars.

• it should be a histogram, not a bar graph.

• preferred party should be on the vertical axis and number of students should be on the horizontal axis.