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.
check sheet
A stuctured form ot table that allows data to be collected by marking how often an event as occurred in a cetain interval.
Maximum
The largest value in a set.
numerical summary
a number used to describe a specific characteristic about a data set.
five-number summary
The minimum, firsy quartile, median, third quartile, and maximum. A box plot represents the five numbers in a five-number summary.
measures of spread
A number of measures used to determine the distance of data from the center of the data set, such as range and standard deviation.
Range
The difference between the maximum and minimum values.
