Edexcel AS statistics
A and B - ANS-A n B
A or B or both - ANS-A u B
Alternative speculation, H1 - ANS-Tells you approximately the parameter if your assumption is
proven to be wrong
Census - ANS-Observes or measures each member of a populace
Continuous statistics - ANS-Data which can take any fee
Critical region - ANS-A area of the chance distribution which, if the take a look at statistic falls
inside it, would purpose you to reject the null speculation
Critical fee - ANS-The first value to fall inside of the crucial place
Discrete information - ANS-Data that can only take positive values
If X has the binomial distribution B(n,p) you can write: - ANS-X~B(n, p)
Independant activities - ANS-Events which don't have any impact on each different. For
impartial events, P(A and B) = P(A) x P(B)
Lower quartile - ANS-1/4 n
Mean = - ANS-Σx/n or Σxf/Σf
Not A - ANS-A'
Null hypothesis, H0 - ANS-Hypothesis that you count on to be correct
One tailed exams - ANS-Hypothesis assessments with alternative hypotheses within the form
H1: p < ... And H1: p > ...
Opportunity sampling - ANS-A non random sampling method in which samples are taken from
the first to be had humans on the time of the study
Population - ANS-The entire set of items which are of interest
Qualitative records - ANS-non numerical observations
Quantitative facts - ANS-numerical observations
Quota sampling - ANS-A non random sampling approach in which a researcher selects a
pattern that displays the traits of the complete population
Random sampling - ANS-each member of the populace has an same hazard of being selected
Sample - ANS-A selection of observations taken from a subset of the populace which is used to
find out records about the populace as a whole
Simple random sample - ANS-A sample of length n selected from the populace in the sort of
manner that every possible sample of size n has an equal danger of being decided on.
Standard deviation (σ) = - ANS-√Variance
Stratified sampling - ANS-The populace is split into collectively exceptional strata and a random
pattern is taken from every
Systematic sampling - ANS-elements within the total listing are selected at ordinary intervals
from an ordered list
Two tailed exams - ANS-Hypothesis checks with an alternative speculation in the form H1: p ≠
...
Upper quartile - ANS-3/4 n
A and B - ANS-A n B
A or B or both - ANS-A u B
Alternative speculation, H1 - ANS-Tells you approximately the parameter if your assumption is
proven to be wrong
Census - ANS-Observes or measures each member of a populace
Continuous statistics - ANS-Data which can take any fee
Critical region - ANS-A area of the chance distribution which, if the take a look at statistic falls
inside it, would purpose you to reject the null speculation
Critical fee - ANS-The first value to fall inside of the crucial place
Discrete information - ANS-Data that can only take positive values
If X has the binomial distribution B(n,p) you can write: - ANS-X~B(n, p)
Independant activities - ANS-Events which don't have any impact on each different. For
impartial events, P(A and B) = P(A) x P(B)
Lower quartile - ANS-1/4 n
Mean = - ANS-Σx/n or Σxf/Σf
Not A - ANS-A'
Null hypothesis, H0 - ANS-Hypothesis that you count on to be correct
One tailed exams - ANS-Hypothesis assessments with alternative hypotheses within the form
H1: p < ... And H1: p > ...
Opportunity sampling - ANS-A non random sampling method in which samples are taken from
the first to be had humans on the time of the study
Population - ANS-The entire set of items which are of interest
Qualitative records - ANS-non numerical observations
Quantitative facts - ANS-numerical observations
Quota sampling - ANS-A non random sampling approach in which a researcher selects a
pattern that displays the traits of the complete population
Random sampling - ANS-each member of the populace has an same hazard of being selected
Sample - ANS-A selection of observations taken from a subset of the populace which is used to
find out records about the populace as a whole
Simple random sample - ANS-A sample of length n selected from the populace in the sort of
manner that every possible sample of size n has an equal danger of being decided on.
Standard deviation (σ) = - ANS-√Variance
Stratified sampling - ANS-The populace is split into collectively exceptional strata and a random
pattern is taken from every
Systematic sampling - ANS-elements within the total listing are selected at ordinary intervals
from an ordered list
Two tailed exams - ANS-Hypothesis checks with an alternative speculation in the form H1: p ≠
...
Upper quartile - ANS-3/4 n
