Sharp EL-9900 15 x’ value or list x’, Using Regression Functions, 16 y’ value or list y’

Chapter 10: Statistics & Regression Calculations

15 x’ value or list x’

Finds the estimated value of x for a given value of y by applying the function determined by the regression.

Example

When the following is entered as statistical data:

x

y

10	20	30	40	50
20	40	60	80	100

Find estimated value of x given y = 140.

1.Enter the above data into L1

(x) and L2 (y) and execute

Rg_ax+b (L1, L2).

2. Press #140 SD15E.

Using the

regression

functions

16 y’ value or list y’

Find the estimated value of y for a given value of x by applying the function determined by the regression formula.

Example

Using above data, find the estimated value for y given x = 80, 100.

1.Press #@{80 ,100 @} SD16 E.

•15 x’ and 16 y’ will be valid

after executing a regression calculation excluding 2nd, 3rd, 4th, degree polynomial, logistic, and sine regressions.

The following table shows the relationship between the time and temperature of water, when heating a beaker filled with water.

Time (min)	2	3	4	5	6	7	8	9	10	10.5	11	11.5	12	12.5
Temperature	38.4	46.4	54.4	62.5	69.6	76.1	82.4	88.6	93.4	94.9	96.5	98.2	99.1	100
(°C)

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