-E31-
DEG
STAT
C P K
[
]
0
.
7 2 5 9 0 9 9 1 2 6 8
¾
Find a, b and r for the following data using linear regression and
estimate x = ? for y =573 and y = ? for x = 19.
Data
item
15 17 21 28
FREQ. 451 475 525 678
DEG
STAT
1–
V A R
L I N
L O G
[ MODE ] 2 [
]
DEG
STAT
D A T A
4 = 2 8
,
[
] [ DATA ] 15 [ ] 451 [ DATA ]
17 [ ] 475 [ DATA ] 21 [ ] 525
[ DATA ] 28 [ ] 678
6 7 8
REG
DEG
STAT
a
[ 2nd ] [ a ]
1 7 6
.
1 0 6 3 2 9 1 1 4
REG
DEG
STAT
b
[ 2nd ] [ b ]
1 7
.
5 8 7 3 4 1 7 7 2 2
REG
DEG
STAT
r
[ 2nd ] [ r ]
0
.
9 8 9 8 4 5 1 6 4 1 3
REG
DEG
STAT
x
’
5 7 3
573 [ x
’
]
2 2
.
5 6 7 0 0 7 3 4 1 3
REG
DEG
STAT
y
’
1 9
19 [ y
’
]
5 1 0
.
2 6 5 8 2 2 7 8 5
REG
Deleting data
The method to delete data depends on whether you have already
stored the data by next pressing [ DATA ] key or not.
To delete data you just input but have not yet stored it by next pressing
[ DATA ] , simple press [ CE ].
To delete data that you have already stored by next pressing [ DATA ] ,
(A) To delete single–variable data using the following syntaxes :
# < x value > [ 2nd ] [ DEL ]
