L6 - quantitative ecology & descriptive statistics

Question 1

what is descriptive statistics?

Answer 1

finds ways to summarize data
includes:
- central tendency
- range
- symmetry

Question 2

what is inferential statistics?

Answer 2

what does the data tell us? what inferences on the data that has been collected.

Question 3

what are the three measures of central tendency?

Answer 3

mean, median , mode

Question 4

If data is symmetrical it is________ ________

Answer 4

Normally distributed

Question 5

what are the two types of error

Answer 5

• systematic
• random

Question 6

what is spread (range) in a data set

Answer 6

the difference between the highest and lowest values. high spread = high difference

Question 7

what are the three measures of spread

Answer 7

IQR, variance, Standard deviation

Question 8

what does a robust dataset describe?

Answer 8

it behaves as expected for any data set
- reliable, tough, strong, confident

Question 9

what does a resistant dataset describe?

Answer 9

one or two outliers wont change the value of the statistics too significantly.