set.seed(202003)
x <- rnorm(10, mean = 2, sd = 3)
x
mean(x)
y <- rnorm(10, mean = 2, sd = 3)
y
x
cov(x,y)
cor(x,y)
cor(x,-y)
rgamma(10, 1, 3)
rt(10, 20)
rt(10, 100)
macierz <- matrix(0, nrow = 10, ncol = 5)
macierz[,1] <- x
macierz[,2] <- y
set.seed(202003)
macierz[,3] <- rgamma(10, 1, 3)
set.seed(202003)
macierz[,4] <- rt(10, 20)
set.seed(202003)
macierz[,5] <- rt(10, 100)
macierz
cov(macierz)
cor(macierz)
t.test(macierz[,1], alternative = "two.side", mu = 2)
t.test(macierz[,1], alternative = "two.side", mu = 4.73)
t.test(macierz[,1], macierz[,2])
shapiro.test(macierz[,1])
shapiro.test(macierz[,5])
?t.test
macierz[,1]
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}