Table 4.
ρ | SDρ | 95% CI | V% | K | N | |
---|---|---|---|---|---|---|
CORRELATIONS CORRECTED FOR SAMPLING- AND MEASUREMENT ERRORa | ||||||
Overall | 0.130 | 0.162 | (0.077, 0.183) | 39.16 | 54 | 5884 |
Affiliation | 0.116 | 0.109 | (0.050, 0.182) | 53.15 | 34 | 3832 |
Achievement | 0.139 | 0.175 | (0.080, 0.198) | 33.74 | 47 | 5092 |
Power | 0.038 | 0.134 | (−0.055, 0.131) | 43.68 | 20 | 2282 |
CORRELATIONS CORRECTED FOR SAMPLING ERROR ONLYa | ||||||
Overall | 0.095 | 0.112 | (0.056, 0.134) | 38.81 | 54 | 5884 |
Affiliation | 0.092 | 0.087 | (0.040, 0.144) | 53.93 | 35 | 3913 |
Achievement | 0.110 | 0.131 | (0.066, 0.154) | 34.67 | 47 | 5092 |
Power | 0.026 | 0.099 | (−0.046, 0.098) | 45.45 | 21 | 2601 |
DESCRIPTIVE STATISTICS FOR UNCORRECTED SINGLE CORRELATIONS | ||||||
M | SD | 95% CI | Kc | |||
Overall | 0.073 | 0.161 | (0.048, 0.098) | 165 | ||
Affiliation | 0.081 | 0.175 | (0.032, 0.130) | 51 | ||
Achievement | 0.073 | 0.155 | (0.039, 0.106) | 86 | ||
Power | 0.059 | 0.155 | (−0.001, 0.119) | 28 |
ρ, mean population correlation; SDρ, estimated standard deviation of population correlations; CI, confidence interval; V%, percentage of variance accounted for by sampling error; K, number of independent study correlations; N, total sample size; M, arithmetic mean of single correlations; SD, standard deviation.
K is slightly lower than in the overall statistic in Table 2 due to the exclusion of two flagged cases and some zero results in our computations.
K is slightly lower than in the overall statistic in Table 2 due to the exclusion of two flagged cases.
For the non-meta-analytic computations, K is the number of single correlations.