visualizing data

Visualizing Databy Dhvanil Patel

Isn’t it all about pretty bar charts? Isn’t it all about pretty bar charts?

Isn’t it just a fancy way of showing numbers? Isn’t it just a fancy way of showing numbers?

Oh, Data Viz? Yeah, I can do that in Excel. Oh, Data Viz? Yeah, I can do that in Excel.

Why do we even need Data Visualization? Why do we even need Data Visualization?

Yeah, I’ve worked with D3.js too. Yeah, I’ve worked with D3.js too.

Isn’t it all about pretty bar charts? Isn’t it all about pretty bar charts?

Isn’t it just a fancy way of showing numbers? Isn’t it just a fancy way of showing numbers?

Oh, Data Viz? Yeah, I can do that in Excel. Oh, Data Viz? Yeah, I can do that in Excel.

Why do we even need Data Visualization? Why do we even need Data Visualization?

Yeah, I’ve worked with D3.js too. Yeah, I’ve worked with D3.js too.No! No!

DIKW Pyramid? DIKW Pyramid?

Data Data

Information Information

Knowledge Knowledge

Wisdom Wisdom

Data Data

Knowledge Knowledge

Wisdom Wisdom

It is raining.

Data Data

Knowledge Knowledge

Wisdom Wisdom

The temperature dropped 15 degrees and then it started raining.

Data Data

Knowledge Knowledge

Wisdom Wisdom

If the humidity is very high and the temperature drops substantially the atmospheres is often unlikely to be able to hold the moisture so it rains.

Data Data

Knowledge Knowledge

Wisdom WisdomI should carry an umbrella to office today.

Data Visualization Data Visualization

InformationDesign

Why is Data Visualization important? Why is Data Visualization important? essential? crucial? neccesary? vital? critical? fundamental?

useful? meaningful? decisive? relevant? far-reaching?

Sight Sight1250Mb/s 1250Mb/s125Mb/s 125Mb/s

Touch Touch12.5Mb/s 12.5Mb/s

SmellHearing

SmellHearingTaste Taste

Sight Sight1250Mb/s 1250Mb/s125Mb/s 125Mb/s

Touch Touch12.5Mb/s 12.5Mb/s

SmellHearing

SmellHearingTaste Taste

Active awareness at any given time

Human beings are visual creatures. Human beings are visual creatures.

Analysis of Variance (ANOVA) Analysis of Variance (ANOVA) Confounding Factor Confounding Factor Correlation Coefficient Correlation CoefficientDegrees of Freedom (df) Degrees of Freedom (df)

χ² (Chi-Square) χ² (Chi-Square) Sum of Squares Sum of SquaresThe Statistic t The Statistic tAlternative Hypothesis Alternative HypothesisStatistical Significance Statistical Significance

The Statistic Z The Statistic ZOne-Tailed Test One-Tailed Test Critical Value Critical Value Critical Region Critical Region Statistical Test Statistical TestStandard Error Standard Error

F Test F TestPower Powerβ (beta) β (beta) α (alpha) α (alpha) Z Score Z ScoreParameter Parameter Variance VarianceDeviation Deviation Range RangeMode Mode

Type II Error Type II Error Transformation Rules Transformation RulesNormal Distribution Normal Distribution Statistic StatisticMedian MedianMean Mean Histogram Histogram

Regression Regression Related Measures Related MeasuresCentral Limit Theorem Central Limit Theorem Sample Mean (X Bar) Sample Mean (X Bar) Population Population

Standard Deviation Standard DeviationMean MeanMean Square Mean SquareType I Error Type I ErrorTwo-Tailed Test Two-Tailed Test s² s² Prediction Prediction

β (beta) β (beta) Mode Mode Histogram Histogramt Test t TestCritical Region Critical Region Sample Mean (X Bar) Sample Mean (X Bar) Confounding Factor Confounding Factor

Null HypothesisUnbiased Estimate Random Sample Average DeviationStandard Deviation Standard Deviation