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The Himalaya by the Numbers: A Statistical Analysis - Himalayan ...

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90<br />

80<br />

70<br />

60<br />

50<br />

40<br />

30<br />

20<br />

10<br />

0<br />

32.2<br />

22.6<br />

38.4<br />

25.0<br />

38.5<br />

15.3 15.2 15.8<br />

25.5<br />

150 Appendix B<br />

34.0<br />

23.0<br />

Member Ascent Rates for Popular 6000m Peaks (1950-2006)<br />

(Adjusted Wald 95% Confidence Intervals)<br />

41.7<br />

28.1 28.3<br />

18.0<br />

41.1<br />

21.8<br />

30.6<br />

39.3<br />

25.5<br />

Chart A-4: Member ascent rates for selected 6000m peaks<br />

with 50+ members above base camp from 1950-2006<br />

Members<br />

Above BC<br />

32.0<br />

43.8<br />

22.9<br />

32.4<br />

Ascent<br />

Count<br />

Failure<br />

Count<br />

Ascent<br />

Rate<br />

95% Confidence<br />

Interval<br />

Yates'<br />

Chi Square<br />

Lower Upper p-value<br />

Numbur 93 21 72 22.6 15.3 32.2

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