Describing Data from Graphs

Choose the best description.

• The international load factor is uniform and skewed left with data ranging from about 55 to 90 passenger miles as percentage of available seat miles.

• The international load factor is unimodal and skewed right with data ranging from about 55 to 90 passenger miles as percentage of available seat miles.

• The international load factor is unimodal and skewed left with data ranging from about 55 to 90 passenger miles as percentage of available seat miles.

• The international load factor is unimodal and symmetric with data ranging from about 55 to 90 passenger miles as percentage of available seat miles.

Choose the best description.

• The average wind speed in unimodal and skewed to the right with data ranging from 0 to 7 mph with a gap around 6 mph.

• The average wind speed in unimodal and skewed to the left with data ranging from 0 to 7 mph with a gap around 6 mph.

• The average wind speed in bimodal and skewed to the right with data ranging from 0 to 7 mph with a gap around 6 mph.

• The average wind speed in bimodal and symmetric with data ranging from 0 to 7 mph with a gap around 6 mph.

Choose the best description.

• The number of campsites at the parks is bimodal around 0 and 100; and is skewed to the left. The number of campsites range from 0 to about 200 with several outliers at approximately 280, 400, and 480.

• The number of campsites at the parks is unimodal around 0 and skewed to the right. The number of campsites range from 0 to about 160 with several outliers at approximately 280, 400, and 480.

• The number of campsites at the parks is unimodal around 0 and symmetric. The number of campsites range from 0 to about 160 with several outliers at approximately 280, 400, and 480.

• The number of campsites at the parks is unimodal around 0 and skewed to the right. The number of campsites range from 0 to about 500 campsites.

Choose the best description for the children sugar content.

• The median of the children sugar content is about 47%.

• The median of the children sugar content is about 35%.

• The median of the children sugar content is about 15%.

• The median of the children sugar content is about 8%.

Statistics which is concerned with summarizing values to describe group characteristics of the data.

• Descriptive

• Inferential

• Parametric

• Non Parametric

The deltoid strength data set has ______.

• no outliers

• only a high outlier

• only a low outlier

• both a high outlier and a low outlier

Choose the best description for the adult sugar content.

• The median of the adult sugar content is about 46%.

• The median of the adult sugar content is about 5%.

• The median of the adult sugar content is about 15%.

• The median of the adult sugar content is about 8%.

The biceps strength data set is ______.

• skewed left

• skewed right

• symmetric

• unimodal

Match the following types of plots:

• Stem and Leaf Plot

• The height of each bar shows

  the number or proportion of observations that

  fall within the interval corresponding to that

  bar. Altering the interval widths can change the

  appearance of the histogram.

• Histogram

• A graphical representation of

  the five-number summary (minimum, first

  quartile, median, third quartile, maximum).

• Dot Plot

• Represents each observation by

  a dot, with the position on the horizontal

  axis corresponding to the data value of that

  observation, with nearly identical values

  stacked on top of each other.

• Segmented Bar Plot

• Each data value is split

  into the first digit or digits and the last digit.

• Box Plot

• Examples of bar graphs for one categorical variable, broken down by categories of another

  categorical variable.

When the majority of the data is to the right of the graph and there are outliers to the left, the graph is ​ (a)   . Therefore the mean is ​ (b)   the median.

• left-skew

• below

• right-skew

• symmetric

• equal to

• above