BIOSTATS - Descriptive Statistics

studied byStudied by 1 person
0.0(0)
learn
LearnA personalized and smart learning plan
exam
Practice TestTake a test on your terms and definitions
spaced repetition
Spaced RepetitionScientifically backed study method
heart puzzle
Matching GameHow quick can you match all your cards?
flashcards
FlashcardsStudy terms and definitions

1 / 24

encourage image

There's no tags or description

Looks like no one added any tags here yet for you.

25 Terms

1

Descriptive Statistics

  • Help summarize and organize data

  • Used in various fields like business, medicine, and research

New cards
2

Mean

  • The average of all values

  • Affected by outliers (non-resistant measure)

New cards
3

Median

  • The middle value when data is ordered.

  • If odd, middle number

  • If even, average of the two middle numbers

  • Not affected by extreme values (resistant measure)

New cards
4

Mode

  • The most frequently occurring value

  • Can be unimodal, bimodal, or multimodal

New cards
5

Measures of Central Location

  • Quartiles

  • Deciles

  • Percentiles

New cards
6

Quartiles

Divide data into 4 equal parts (Q1, Q2, Q3)

New cards
7

Deciles

Divide data into 10 equal parts (D1-D9)

New cards
8

Percentiles

Divide data into 100 equal parts (P1-P99)

New cards
9

Range Formula

Maximum - Minimum

New cards
10

Interquartile Range (IQR) Formula

Q3 - Q1

New cards
11

Mean Absolute Deviation (MAD)

Average absolute differences from the mean

New cards
12

Variance

Average squared difference from the mean

New cards
13

Population Variance Formula

σ2

<p><span>σ</span><sup>2</sup></p>
New cards
14

Simple Variance Formula

s2

<p><span>s</span><sup>2</sup></p>
New cards
15

Standard Deviation (SD) Formula

σ2

New cards
16

Coefficient of Variation (CV)

σ/x x 100

New cards
17

Z-Score Formula

x - mean / SD

New cards
18

Skewness

Describes asymmetry in data distribution

New cards
19

Negative Skew

  • Tail on the left

  • mean < median

New cards
20

Zero Skew

  • Symmetric distribution

  • mean = median = mode

New cards
21

Positive Skew

  • Tail on the right

  • mean > median

New cards
22

Kurtosis

Describes the peakness of a distribution

New cards
23

Leptokurtic

High peak, heavy tails

New cards
24

Mesokurtic

Normal peak (K = 3)

New cards
25

Platykurtic

Flat peal, light tails

New cards

Explore top notes

note Note
studied byStudied by 369 people
936 days ago
5.0(5)
note Note
studied byStudied by 3 people
189 days ago
4.0(1)
note Note
studied byStudied by 4 people
32 days ago
5.0(1)
note Note
studied byStudied by 10 people
690 days ago
5.0(1)
note Note
studied byStudied by 42 people
616 days ago
5.0(1)
note Note
studied byStudied by 329 people
694 days ago
5.0(2)
note Note
studied byStudied by 16 people
726 days ago
5.0(1)
note Note
studied byStudied by 423 people
709 days ago
5.0(1)

Explore top flashcards

flashcards Flashcard (36)
studied byStudied by 4 people
786 days ago
5.0(1)
flashcards Flashcard (63)
studied byStudied by 2 people
13 days ago
5.0(1)
flashcards Flashcard (24)
studied byStudied by 864 people
185 days ago
4.5(18)
flashcards Flashcard (77)
studied byStudied by 50 people
25 days ago
5.0(1)
flashcards Flashcard (266)
studied byStudied by 8 people
819 days ago
5.0(1)
flashcards Flashcard (39)
studied byStudied by 49 people
902 days ago
5.0(1)
flashcards Flashcard (36)
studied byStudied by 1 person
171 days ago
5.0(1)
flashcards Flashcard (45)
studied byStudied by 6 people
824 days ago
5.0(1)
robot