General Report on Tunny

23D Page 81

(b) Pick-ups.

If two independent runs contain the same wheel, their evidence may be combined. A table has been compiled which is sufficient for elementary setting, [for the basis of the table see 23J(b) and 23X.]

 CERTAIN GOOD Long     Long  4.5         -  4.4        2.7  4.3        2.8  4.2        3.0  4.1        3.1  4.0        3.2  3.9        3.4  3.8        3.5  3.7        3.7 Long     Short  4.5         -  4.4        1.0  4.3        1.2  4.2        1.6  4.1        1.8  4.0        2.0  3.9        2.3  3.8        2.5 Short     Short  3.8         -  3.7        1.0  3.6        1.1  3.5        1.3  3.4        1.6  3.3        1.8  3.2        2.0  3.1        2.1  3.0        2.3  2.9        2.5  2.8        2.6  2.7        2.7 Long     Long  4.0          -  3.9         2.7  3.8         2.9  3.7         3.0  3.6         3.1  3.5         3.2  3.4         3.3 Long     Short  4.0          -  3.9         1.0  3.8         1.3  3.7         1.5  3.6         1.7  3.5         1.9  3.4         2.1  3.3         2.3  3.2         2.5 Short     Short  3.2          -  3.1         1.0  3.0         1.2  2.9         1.5  2.8         1.7  2.7         1.8  2.6         2.0  2.5         2.1  2.4         2.2

As an example of the use of the table, suppose that with the same setting of Χ3 the sigma-age of 3x/1x2. is 2.4 σ
and of 3+4x/1x2x is 3.9σ

According to the table, the settings of Χ3, Χ4 are both "certain", though neither run separately would give even a "good" setting.

(c) Rival Settings.

In this section the effects of competing scores have been ignored. (See 23J, 23X)

(d) Expected Sigma-age.

The expected sigma-age is where ξ is the proportional bulge. For p = this is .

23D     ANNOTATED EXHIBITS

This is rather illogically included here to exhibit the practice of chi-setting as concretely as possible: its perusal is recommended. Inevitably it includes much which is explained only in the later sections of the chapter but this is always indicated by reference. The message shown is on Χ2 limitation, but no special method is used except that all runs are made against Χ2 crosses only. (The operator neglects the four letter count on ΔD1 ΔD2 it may be repeated that on the whole text there can be only a random bulge of xx ever ..).