1-2-8

Tests (TEST)

u2-Prop Z Test

This test is used to compare the proportion of successes. The 2-PropZ Test is applied to the normal distribution.

 

 

 

x1

–

x2

 

 

 

 

x1

: data value of sample 1

Z =

 

 

n1

n2

 

 

 

 

x2

: data value of sample 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

n1

: size of sample 1

 

 

p(1– p )

 

1

+

1

 

 

 

 

 

n2

: size of sample 2

 

 

 

n1

n2

 

 

 

 

 

 

 

 

 

 

 

 

ˆp

: estimated sample proportion

Perform the following key operation from the statistical data list.

3(TEST)

b(Z)

e(2-Prop)

p1 .................................

sample proportion test conditions (“Gp2” specifies two-tail

 

test, “< p2” specifies one-tail test where sample 1 is smaller

 

than sample 2, “> p2” specifies one-tail test where sample 1

 

is greater than sample 2.)

x1 .................................

data value (x1 >0 integer) of sample 1

n1 .................................

size (positive integer) of sample 1

x2 .................................

data value (x2 >0 integer) of sample 2

n2 .................................

size (positive integer) of sample 2

Save Res .....................

list for storage of calculation results (None or List 1 to 20)

Execute .......................

executes a calculation or draws a graph

After setting all the parameters, align the cursor with [Execute] and then press one of the function keys shown below to perform the calculation or draw the graph.

• 1(CALC) ... Performs the calculation.

• 6(DRAW) ... Draws the graph.

Calculation Result Output Example

20011101