Statistics - Test 1

Question 0

Parameter

Answer 0

numerical fact/measure collected from population data

Question 1

Statistic

Answer 1

numerical fact/measure collected from sample data

Question 2

Census

Answer 2

collecting information from an everyday member of a population

Question 3

Representative Sample

Answer 3

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

Question 4

Random sampling

Answer 4

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

Question 5

Data Set

Answer 5

the whole collection of data from a population or sample

Question 6

Quantitative - Discrete

Answer 6

variables with countable values

only assume whole values with nothing in between

Question 7

Quantitative - Continuous

Answer 7

variables that can assume any value in one or more intervals

Question 8

Relative frequency

Answer 8

Number in category/ all of the values added together

Question 9

Cumulative relative frequency

Answer 9

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

Question 10

Midpoint

Answer 10

Two values added/2

Question 11

Range

Answer 11

Largest - smallest

Question 12

Chebyshev - given interval to find percent

Answer 12

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

Question 13

Empirical rule - bell shaped curves ONLY

- given interval, find %

Answer 13

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

Question 14

Empirical rule

- given percent, find interval

Answer 14

K= 1/2/3

M +/- k * SD