Example of 1-Var Statistics

Example of 1-Variable Statistics

The following example shows you how to apply the information given in the previous sections concerning 1-variable data. The example is divided into two parts. Part one shows you how to enter and remove the data. Part two shows you how to perform calculations and review the data.

Example - Part One

Enter the data values listed below. (Be sure to remove any values that are entered incorrectly.)

75 86 93 93 93 93 98 100

Procedure	Press	Display
Clear display	[ CLEAR ]
Clear registers and select 1-variable	[ STAT ]{ CLR }{ CS1 }
Begin data entry	75 [ ∑+ ]
Enter incorrect value for later removal	85 [ ∑+ ]
Enter correct value	86 [ ∑+ ]
Enter incorrect repeated values	4 { FRQ } 94 [ ∑+ ]
Remove values	[ INV ][ ∑+ ]
Enter repeated values correctly	4 { FRQ } 93 [ ∑+ ]
Enter remaining data	98 [ ∑+ ]
	100 [ ∑+ ]
Remove earlier incorrect value	85 [ INV ] [ ∑+ ]

Example - Part Two

Calculate the mean, population standard deviation, sum, and sum of the squares of the data entered in part one above. Then check the last data value entered, and the frequency of the last data entered.

Procedure	Press	Display
Mean	{ MN }
Population standard deviation	[ INV ]{ s }
Select show option	{ --> }{ SHW }
Sum	{ Sx }
Sum of squares	{ Sxx }
Number of data values	{ n }
Last entered value	{ Lx }
Last entered frequency	{ Lfr }