Survey sample size for a margin of error and confidence level with optional popu...
https://saylorinnovations.com/api/stats/sample-sizeOverview
Survey sample size for a margin of error and confidence level with optional population correction, expected proportion and the z value used
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
uncategorized
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-17 10:37:41
Health
Status
healthy
Latency (p50)
336ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-10-28 15:24:09
Last Healthy
2026-10-28 15:24:09
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"confidence": "95",
"margin": "5",
"population": "1000"
},
"type": "http"
}
Output Schema
{
"example": {
"confidence": 95,
"expected_proportion_percent": 50,
"finite_population_applied": true,
"margin_percent": 5,
"note": "Assumes simple random sampling; use proportion 50 when unsure, it gives the largest required sample.",
"population": 1000,
"required_sample": 278,
"source": "Cochran sample size formula with finite population correction",
"unadjusted_sample": 385,
"z": 1.95996
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 15:24:09 | healthy | 402 | 2884ms | |
| 2026-10-28 14:18:35 | healthy | 402 | 204ms | |
| 2026-10-28 06:58:56 | healthy | 402 | 336ms | |
| 2026-10-28 05:37:32 | healthy | 402 | 268ms | |
| 2026-10-28 04:39:22 | healthy | 402 | 1171ms | |
| 2026-10-28 03:45:37 | healthy | 402 | 183ms | |
| 2026-10-28 02:45:26 | healthy | 402 | 352ms | |
| 2026-10-28 01:41:20 | healthy | 402 | 272ms | |
| 2026-10-28 00:35:18 | healthy | 402 | 286ms | |
| 2026-10-27 23:38:55 | healthy | 402 | 387ms | |
| 2026-10-27 22:52:44 | healthy | 402 | 552ms | |
| 2026-10-27 21:42:00 | healthy | 402 | 537ms | |
| 2026-10-27 20:27:01 | healthy | 402 | 231ms | |
| 2026-10-27 19:21:44 | healthy | 402 | 327ms | |
| 2026-10-26 07:42:27 | healthy | 402 | 259ms | |
| 2026-10-26 06:52:20 | healthy | 402 | 1147ms |