PFDA,CHAPTER4 Flashcards
The main four types of data analytics
- Descriptive Analytics
- Digaonstic Analytics
- Perdictive Analytics
- Prespective Analytics
Descriptive Analytics
Studies past data to understand events
Helps find trends, patterns, and unusual data
Diagonstic
Figure out the reasons behind past events
Predictive
Predicts future event based on historical data
Prescriptive
Recommends actions or decisions to achieve the best results
Statistical/Mathematical:
Uses mathematical and statistical methods like mean, median, and variance to understand the data. It includes techniques like regression analysis, correlation, time series, and frequency distribution.
Visualization:
Uses charts and graphs to present data visually, making it easier to understand.
- Machine Learning & AI
Applies machine learning and AI techniques for deeper and more advanced data analysis.
Visualization Techniques
Visualization transforms processed data into graphical forms to highlight patterns, trends, and insights not easily seen in raw data.
Column Chart/Bar Chart /
o Used to show numerical differences between categories.
o Bar charts interchange axes compared to column charts.
Histograms / المدرج التكراري
A type of bar chart used to show data distribution for a continuous variable.
Line Chart / الرسم البياني الخطي
Displays changes over time, helping to identify trends.
Area Chart / الرسم البياني المساحي
: Similar to a line chart but fills the area under the line with color to emphasize trends.
Pie Chart / الرسم البياني الدائري
Represents proportions of different categories, suitable for one dataset.
Funnel Chart / الرسم البياني القمعي
Visualizes proportions for stages, useful for comparing rankings.
Word Cloud Chart / الرسم السحابي للكلمات
Displays text data visually, highlighting frequently occurring words.
Heatmap / خريطة الحرارة
Uses color intensity to represent data values, often in grids.
Radar Chart / الرسم البياني الراداري
Compares multiple variables by showing their values as a polygon.
Bubble Chart / الرسم البياني الفقاعي
Similar to a scatter plot but uses bubble sizes to represent a third variable.
Gantt Chart / مخطط جانت
Visualizes project timelines and progress relative to requirements.
Scatter Plot / الرسم النقطي
Shows relationships between two variables on a Cartesian plane.
Boxplot / الرسم الصندوقي
Summarizes statistical measures and highlights outliers in the data.
Stem-and-Leaf Plot / مخطط الساق والورقة
Organizes small datasets while preserving the actual data values.
Descriptive Analytics
it tells you what happend in the past , and it focuses on summarizing historcal data to indentify pattrens , and trends
3 main categories of techniques
- Statistical/Mathematical:
- Visualization:
- Machine Learning & AI:
