Statistics - Test 1 Flashcards Preview

Sophomore Year > Statistics - Test 1 > Flashcards

Flashcards in Statistics - Test 1 Deck (15):
0

Statistic

numerical fact/measure collected from sample data

1

Parameter

numerical fact/measure collected from population data

2

Census

collecting information from an everyday member of a population

3

Representative Sample

a sample that has all/almost all of the characteristics of the population

4

Random sampling

sample drawn in a way that each member of the population has an equal chance of being selected

5

Data Set

the whole collection of data from a population or sample

6

Quantitative - Discrete

variables with countable values
only assume whole values with nothing in between

7

Quantitative - Continuous

variables that can assume any value in one or more intervals

8

Relative frequency

Number in category/ all of the values added together

9

Cumulative relative frequency

Everything from the beginning up to that category/ all values added

10

Midpoint

Two values added/2

11

Range

Largest - smallest

12

Chebyshev - given interval to find percent

U - M/SD or L - M/SD
then
1-1/k^2

13

Empirical rule - bell shaped curves ONLY
- given interval, find %

1SD (68%) = M +/- 1 * SD
2SD (95%) = """""" 2 """"
3SD (99.7%) = """" 3 """"

14

Empirical rule
- given percent, find interval

K= 1/2/3
M +/- k * SD