Manuals/calci/CHIDIST

CHIDIST(x,df)

• 'X' is the value for which distribution is evaluated and df is the number of degrees of freedem.

Description

• This function gives the one_tailed probability of the chi-squared distribution.
• It is denoted by X^2 distribution.Normally categorical datas may displayed in tables.
• The X^2 static used to compare the observed value in each table to the value
• which would be the expected under the assumption. The conditions of X^2 test is

1.The table should be 2x2 or more than 2x2 2.Each observations should not be dependent 3.All expected values should be 10 or greater.  The test statistic is: X^2=summation(Oi-Ei)^2/Ei The degrees of freedom are: (r–1)(c–1) r =No. of rows and c = No. of columns Where: Oi-the observed value in the ith cell Ei- the expected value in the ith cell Also this function will the result as Error when 1.The x&df values are nonnumeric 2.The x value is negative or df value is not an integer 3. The df <1or df>10^10 4.Here CHIDIST=P(X>x),where X is a X^2 random variable.

• • $=COMPLEX(5,2)$ gives $5+2i$
  • Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle =COMPLEX(5,2,"j")} gives $5+2j$

Examples

CHIDIST(x,df)	x	df	RESULT
CHIDIST(18,2)	18	2	0.0001234098
CHIDIST(15,1)	15	1	0.0001075112
CHIDIST(2,1)	2	1	0.157299207050
CHIDIST(-2,1)
1	error
CHIDIST(2,-1)	2
error

See Also

• CHITEST

References

Complex Numbers