2-1 Smart book Assignment PDF

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Assignment in the smartbook from module 2...

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2-1 Smart book Assignment: Chapter 3 Sorting data is helpful because  

we can see the frequency of each data value. we can see the range of values.

A stem-and-leaf plot is basically   

a tool which uses the digits in each number to create stems and leaves. a tool used in exploratory data analysis. a frequency tally.

True or false: A dot plot displays individual values of qualitative data. 

False

When constructing bins for a frequency distribution of quantitative data, which of the following principles should generally be followed?   

Bins should be the same width. Bins should be mutually exclusive. The bins should be exhaustive.

If the data were collected from a random sample we must allow for SAMPLING error A relative frequency distribution for quantitative data identifies 

the proportion of observations that occur in each bin.

Which type of data cannot be sorted? 

Nominal

Stem-and-leaf displays can be used to   

determine central tendency and dispersion. analyze the small samples of integer data. observe individual data points.

The rectangles of a histogram   

represent grouped data are drawn with no space, or gaps, between them, except when there is no data in a particular bin. represent the class width and frequency, or relative frequency, of the respective class

Dot plots can show which features of a data set?   

Variability Shape Center

One of the primary goals of constructing a frequency distribution for quantitative data is to summarize the data 

by showing frequency of values that lie within a class or bin.

An outlier is defined as   

an extreme value is might have arisen from measurement error. an extreme value that might have arisen from a different cause. an extreme value that is located in the tail of the histogram.

Identify the problems with the pictured graph.   

There is no 0 value on the vertical axis. The vertical axis limit is too high. The time range needs to be specified

Sorting data is helpful because  

we can see the range of values. we can see the frequency of each data value.

True or false: Line charts can be useful for comparing variables that differ in magnitude or units. 

True

When constructing a histogram what values/labels go on the horizontal (x) axis and the vertical (y) axis. 

Quantitative bin limits on the horizontal axis; frequency or relative frequency on the vertical axis.

Characteristics of a bar chart include:  

display horizontal bars when the axis labels are long or there are many categories. length or height of bar reflects frequency of a category

Histograms can be used to  

observe the spread or the variability of the data. determine the shape of the data.

There are several guidelines that one should follow when creating graphs. Which of the following describe these guidelines?   

Axes that are numerical should be to the appropriate scale. Axes should be clearly labeled. Novelty graphs such as pyramid charts introduce ambiguity.

A line chart can be used to 

spot trends.



display time series data.

Which of the following statements is an accurate statement about a bar chart? 

Generally, there is space between the horizontal bars.

The length of a bar or height of a column in a bar or column chart represents the VALUE of a category To construct a frequency distribution for qualitative data, the data is split into 

Categories

Pareto charts are used to sort out the vital few from the trivial many. Characteristics of a bar chart include:  

display horizontal bars when the axis labels are long or there are many categories length or height of bar reflects frequency of a category

A stacked column chart requires that the column height be a SUM of at least two subtotals Histograms can be used to  

determine the shape of the data. observe the spread or the variability of the data.

Which characteristic below is NOT a rule of thumb for displaying categorical data on a column chart? 

The height of each column should be the same.

A pie chart is a segmented circle whose segments must sum to a TOTAL A new dining plan was implemented in a residence hall at State University. Residents were asked to assess the new plan and give a grade of A, B, C, D, or F to the new dining plan. 482 total residents provided the following grades: A, 234; B, 148; C, 87; D, 9. There were 4 F’s A SCATTER PLOT is a type of graph that allows researchers to investigate the relationship between two variables Identify the characteristic below that does NOT describe a Pareto chart. 

Most common categories appear to the far right on the graph.

Which of the following is NOT a tip for an effective table display? 

Headings should be detailed and complex in order to be as descriptive as possible.

A STACKED column chart shows the sum of several subtotals in each column. Excel's pivot table feature 

summarizes discrete numerical data

 

allows interactive analysis. summarizes categorical data.

Which of the following statements is true? 

Column or bar charts can be used to display time series data using the time periods as the category labels

Which of the following is NOT a common error in making graphs? 

Using a logarithmic scale.

A scatter plot shows  

pairs of observations (x1, y1) . . . (xn, yn) on an X-Y graph. if an obvious association exists between two variables.

Print media such as Forbes or NYTimes should not judged using the same rigorous standards as ACADEMIC journals Tables are frequently used to display data because  

they are the simplest form of data display. a well-designed table can communicate the meaning of data at a glance

Which of the following graphical depictions allows you to examine the relationship between two variables? 

Scatterplot

An Excel’s PIVOT table provides interactive analysis of data Which of the following is NOT a common error one should beware. 

Unembellished charts that do not contain sound or animation

The pictured graph from a New York Times op-ed piece has some misleading components to it; which of the following elements are misleading?  

the higher, by position, the category icon, the lower the rating. All the ratings arrows end at the same point, regardless of the actual rating.

Which of the following graphical depictions are useful to observe the shape (distribution) of a data set for a single numerical variable?   

Histogram Stem-and-leaf diagram Polygon...