FlashCards
What does the Median stand for in Anatomy of a Box Plot?
(Q2)
*The middle value of the dataset when arranged in order.
*Represented by a line inside the box.
*Divides the data into two halves.
What is a Quartile in an Anatomy of a Box Plot?
(Q1 and Q3)
*Q1 (First Quartile): The value below which 25% of the data falls.
*Q3 (Third Quartile): The value below which 75% of the data falls.
*These define the edges of the box.
What is the Interquartile Range (IQR) ??
*IQR = Q3 - Q1 .
*It measures the spread of the middle 50% of the data.
*Used to detect outliers.
What are Whiskers accoroding to the Anotomy of the Box Plot?
*Extend from the box to show the range of the data within 1.5 \times IQR of Q1 and Q3
*Whisker endpoints are the smallest and largest values within this range.
What are Outliers accoring the the Anotomy of a Box Plot?
*Data points that fall outside 1.5 \times IQR from Q1 or Q3.
*Represented as individual dots or symbols beyond the whiskers.
What is the Anotomy of the Plot?
1.Box:
*The central rectangle shows the interquartile range (Q1 to Q3).
*Represents the middle 50% of the data.
2.Horizontal Line in the Box:
*Indicates the median (Q2).
3.Whiskers:
*Extend to the smallest and largest values within 1.5 \times IQR from the quartiles.
4.Outliers:
*Any values beyond the whiskers are plotted as individual points.
Median
The middle Value of a dataset with the numbers arranged in ascending order. It divides the dataset into two equal halves, where 50% of the data lies below and 50% lies above it.
Data
Data is raw facts or information collected for analysis, decision-making, or research.
Dot Plot
A dot plot is a simple graph that shows data points as dots along a number line.
what is skewed disctribution, and what types are there?
A skewed distribution occurs when data is not symmetric, with more values concentrated on one side of the mean.
Types: (This left foot = shape is negatively skewed, and right foot shape = positively skewed)
1. Right Skewed (Positively Skewed): Tail is on the right side.
* Most data is on the left.
* Mean > Median.
2. Left Skewed (Negatively Skewed): Tail is on the left side.
* Most data is on the right.
* Mean < Median.
Symmetry
Symmetry in statistics refers to a distribution where the left and right sides are mirror images of each other.
Qualitative data
Non-numeric information based on some quality of characteristic.
Quartile
Values that divide a data set into four equally sized groups.
Mean
Average, Calculated by adding a series of elements in a dara set together and dividing by the total number in the series.
Bimodal
A description of a data set with two modes.