Statistical analyses grouped by figure number and panel and statistical tests
| Figure | Test | |||||
|---|---|---|---|---|---|---|
| Mann–Whitney | n1 | n2 | Exact p value | U | ||
| 2B, dendrite count | WT versus Dscam1−/− | 22 | 15 | <0.0001 | 120 | |
| 2C, axon routing | WT versus Dscam1−/− | 22 | 15 | <0.0001 | 131 | |
| 4B, dendrite count | hh > + versus hh > Dscam1 RNAi | 12 | 14 | <0.0001 | 268 | |
| 4E, axon routing | hh > + versus hh > Dscam1 RNAi | 12 | 14 | 0.0017 | 242 | |
| Kruskal–Wallis test followed by Dunn’s multiple-comparisons tests | n1 | n2 | Adjusted p value | Z | ||
| 4D, dendrite count | hh > + in WT background versus hh > + in Dscam1−/− background | 12 | 9 | 0.0002 | 4.01908 | |
| hh > + in Dscam1−/− background versus hh > Dscam1 in Dscam1−/− background | 9 | 16 | 1.0000 | 0.87597 | ||
| hh > + in WT background versus hh > Dscam1 in Dscam1−/− background | 12 | 16 | 0.0007 | 3.66973 | ||
| 4F, axon routing | hh > + in WT background versus hh > + in Dscam1−/− background | 12 | 9 | 0.0012 | 3.53773 | |
| hh > + in Dscam1−/− background versus hh > Dscam1 in Dscam1−/− background | 9 | 16 | 1.0000 | 0.25691 | ||
| hh > + in WT background versus hh > Dscam1 in Dscam1−/− background | 12 | 16 | 0.0005 | 3.78933 | ||
| Mann–Whitney | n1 | n2 | Exact p value | U | ||
| 6B, dendrite count | scp2 > + versus scp2 > Dscam1 RNAi | 12 | 19 | <0.0001 | 304 | |
| 6E, axon routing | scp2 > + versus scp2 > Dscam1 RNAi | 12 | 19 | 0.0042 | 263 | |
| Kruskal–Wallis test followed by Dunn’s multiple-comparisons tests | n1 | n2 | Adjusted p value | z | ||
| 6D, dendrite count | scp2 > + in WT background versus scp2 > + in Dscam1−/− background | 12 | 17 | 0.0001 | 4.10278 | |
| scp2 > + in Dscam1−/− background versus scp2 > Dscam1 in Dscam1−/− background | 17 | 16 | 0.7877 | 1.12036 | ||
| scp2 > + in WT background versus scp2 > Dscam1 in Dscam1−/− background | 12 | 16 | <0.0001 | 5.08455 | ||
| 6F, axon routing | scp2 > + in WT background versus scp2 > + in Dscam1−/− background | 12 | 17 | <0.0001 | 4.54159 | |
| scp2 > + in Dscam1−/− background versus scp2 > Dscam1 in Dscam1−/− background | 17 | 16 | 0.4691 | 1.41738 | ||
| scp2 > + in WT background versus scp2 > Dscam1 in Dscam1−/− background | 12 | 16 | 0.0044 | 3.1786 | ||
| Kruskal–Wallis test followed by Dunn’s multiple-comparisons tests | n1 | n2 | Adjusted p value | z | ||
| 7B, dendrite count | scp2,hh > + in WT background versus scp2,hh > + in Dscam1−/− background | 12 | 11 | <0.0001 | 4.59036 | |
| scp2,hh > + in Dscam1−/− background versus scp2,hh > Dscam1 in Dscam1−/− background | 11 | 14 | 0.0004 | 3.81124 | ||
| scp2,hh > + in WT background versus scp2,hh > Dscam1 in Dscam1−/− background | 12 | 14 | 1.0000 | 0.95042 | ||
| 7C, axon routing | scp2,hh > + in WT background versus scp2,hh > + in Dscam1−/− background | 12 | 11 | 0.0005 | 3.74981 | |
| scp2,hh > + in Dscam1−/− background versus scp2,hh > Dscam1 in Dscam1−/− background | 11 | 14 | 0.0003 | 3.90274 | ||
| scp2,hh > + in WT background versus scp2,hh > Dscam1 in Dscam1−/− background | 12 | 14 | 1.0000 | 0.0000 | ||
| Welch’s t test | n1 | n2 | Adjusted p value | t | DF | |
| Extended Data 6D, fascicle to midline | scp2 > + in WT background versus scp2 > + in Dscam1−/− background | 12 | 17 | 0.1585 | 1.4505 | 26.937 |
| Extended Data 6-1E, soma to midline | scp2 > + in WT background versus scp2 > + in Dscam1−/− background | 12 | 17 | <0.0001 | 4.9343 | 25.317 |
| Kruskal–Wallis test followed by Dunn’s multiple-comparisons tests | n1 | n2 | Adjusted p value | z | ||
| Extended Data 7-1, soma to midline | scp2,hh > + in WT background versus scp2,hh > + in Dscam1−/− background | 12 | 11 | <0.0001 | 4.24784 | |
| scp2,hh > + in Dscam1−/− background versus scp2,hh > Dscam1 in Dscam1−/− background | 11 | 14 | 0.0007 | 3.6843 | ||
| scp2,hh > + in WT background versus scp2,hh > Dscam1 in Dscam1−/− background | 12 | 14 | 1.0000 | 0.71709 | ||
Detailed statistical analyses, including sample sizes and related statistical values, are provided in this table.