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Thursday, October 10, 2019Name _____________________________ [8 pts] Below is a visualization model from the text. Match each of the following actions or considerations to each of the five stages in the model above that transforms data to knowledge. Use each one at least once.Filtering rows and selecting columns for the visualization: _____________________________Choosing which visual feature is best for a data attribute: _____________________Normalizing an attribute value to an x-axis range: ________________________Rendering a 3D space or visualization to 2D: _______________________ Realizing trends and directions in the data: ________________________Merging/joining two data sets into one: _____________________________Determining that two or more variables’ relationship should be investigated further: ____________________Spotting general groups of data and outliers: ______________________________Give three distinctions between an infographic versus a data visualization.[6 pts]a.b.c.Describe three different actions you can do with data that has missing data. You should also describe in what cases you would use that action.[6 pts]Data coding.[14 pts]4 bits permit representing _________ unique values.If we only need to represent 36 unique values, a minimum of _______ bits are required.The value 010111 in binary is the value _______________ in decimal. And the value 19 in decimal is written as ____________ in binary.If the 8 bit ASCII coding in decimal for “a” is 97 then “d” is _____.For the following RGB values, choose what the color is represented. Choose from: white, black, grey, red, green, yellow, blue, brown, light blue, light green, dark green)0,0,0 = __________________0,0,255 = ______________________150,150,255 = __________________10,100,10 = ______________________For the following descriptions, choose the file types that is best described from (.xlsx—Excel, .csv – Comma Separated Values, .json – Javascript Object Notation, .html –HyperText Markup Language)______ Proprietary spreadsheet format with binary encodings______ A text file that contains data and how to render the data for a web browser______ A text file that holds entirely data, with the same number of values per line______ A text file that holds data and descriptions of data; it can represent more complicated structures and relationships of data.______ The most common file format used by data visualization and data mining tools.Plot on the number line this set of 12 univariate numbers {5, 10, 11, 13, 16, 25, 28, 30, 31, 36, 45, 50} with small circles. [16 pts]┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼ 0 5 10 15 20 25 30 35 40 45 50 55Superimpose a Tukey box plot marking the median and 25th and 75th percentiles.What is the mean of these data? _______Bin this data using even ranges for 3 bins: _________________ ___________________ ___________________If we normalize this data set to fall between 0 and 1, and assuming the data range is actually (0 to 50) then the following 3 values are recoded as… 5-> ______, 30-> _______ , and 50 -> _______For each of the attribute/column types, give an example of data of your choice that clearly would represent that type and would clearly not be good to classify with any other possibilities. Also fill in 2 appropriate visual features to which the type could be mapped (position, size, shape, color/hue, intensity, texture, direction). [15 pts]Type descriptionDescribe some example attribute from a table of demographic data (attributes of people)Give 2 viable visual featuresNominal-Categorical-RankedNominal-Categorical-UnrankedOrdinal DiscreteOrdinal ContinuousSpatialTemporalBinary[10 pts]Perception true/false_____ Motion is not a pre-attentive perception._____ Change blindness occurs when we stare at something too long._____ The cones in the human eye react separately to the wavelengths of red, yellow and blue colors._____ About 20% of the population has some named form of color blindness._____ Saccadic eye movements are the eye movements to follow targets of interest._____ Green and red are the best color combo for those with many forms of colorblindness._____ Some illusions might hide data that is there, e.g. Hermann Grid illusions._____ It is good to use more no visualization features than attributes from the data._____ Recognizing texture is pre-attentive._____ People perceive volume in a consistent manner.True/false Tableau.[10 pts]_____ Tableau can process data in real time from databases, spreadsheets or files._____ Tableau can join two or more data sources like a database to create a single table._____ Tableau can create storyboards from several visualization sheets._____ Creation of calculated fields or columns must be done in another app before Tableau can use it._____ Dimensions re Tableau’s form of a numeric (continuous or discrete) data variable._____ Measures are Tableau’s form of categorical data. _____ Grouping and binning create a dimension type variable/column._____ Spatial type data (zip codes or counties) can be easily mapped in Tableau._____ Placing an extra categorical variable in a row or column in Tableau will create facets._____ Time series analyzes a sequence of measurements for its cycles and prediction of patterns.Briefly describe the use of each of these file types.[5 pts].csv: .json:.xlsx.gifDescribe each of the following spatial data visualizations[5 pts]Rubber Sheet:Cityscape:Contour map:Below parallel coordinate plot of car data.[5 pts] INCLUDEPICTURE "" \* MERGEFORMATINET Critique this graph in its design, citing two distinctive good qualities and at least one flaw. ................
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