Symmetry & skewness

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/9

flashcard set

Earn XP

Description and Tags

Symmetry & skewness

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

10 Terms

1
New cards

Symmetrical distribution

  • it is symmetrical if it can be divided into two equal sizes of the same shape

2
New cards

Skewed distribution

  • contrast of what symmetrical distribution is, thus refers to asymmetry

  • The distributions can be skewed to the left or skewed to the right

  • we read skewness based on the direction of which the datapoints cluster

3
New cards

Distribution skewed to the left

  • if it has a long that trails towards the left

4
New cards

Distribution skewed to the right

  • long tail that trails towards the right side

5
New cards

The skew in a box-plot

  • the side of the box that is larger determines the skew

6
New cards

The skew in a box which is equal in size

  • we will have to look at the whiskers to determine the skew

  • the longer whisker will determine the skew

7
New cards

Finding the skew, if the boxes are equal and the same whisker length

  • the distribution is set to be symmetrical

8
New cards

symmetrical distribution & median

  • the plane of symmetry will always be at the median, because it is the middle data point,

9
New cards

symmetrical distribution & mean

  • the mean is the balance point of a distribution, the mean is equal to the value of the median

10
New cards

Skewed distribution & median

  • if it is skewed to the left, the mean is less than the median (the mean will be closer to the left side of distribution, and the median will be closer to the right side of distribution)

  • if it is skewed to the right, the mean is greater than the median (the mean is closer to the right side of distribution, & the median will be closer to the left side of distribution)