Statistics

Question 1

convinience sampling

Answer 1

the sample consists of easily accesible responses from the population

Question 2

sample size planning

Answer 2

part of the design of statistical experiment

Question 3

qualitative data

Answer 3

can’t be represented by numbers

Question 4

quantitative data

Answer 4

data represented by numbers

Question 5

histogram

Answer 5

illustrates the relative or absolute frequency of the sorted data point in different sections

Question 6

boxplot

Answer 6

displays min, max, median…

Question 7

the median

Answer 7

the middle value after sorting

Question 8

outliers

Answer 8

far away from the median

Question 9

sample mean

Answer 9

data average

Question 10

the sample standard deviation

Answer 10

measure of the degree of variation in the sample

Question 11

Law of Large Numbers

Answer 11

the mean of a large collection of independent random variables approximates the true population mean

Question 12

deviations can be modeled with the help of normal distribution

Answer 12

The Central Limit Theorem

Question 13

gives the probability of different possible outcomes

Answer 13

probability distribution

Question 14

normal distribution

Answer 14

symetrical arround the mean

Question 15

confidence interval

Answer 15

a range of possible values for an unknown parameter

Question 16

confidence level

Question 17

random variable

Answer 17

a certain value of the samples objects