# Tutoring Sessions Numeric Distribution + Equal-Width Histogram

> Tutoring Sessions Numeric Distribution + Equal-Width Histogram is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-26).

Computes numeric distribution statistics and an equal-width histogram for tutoring session data (session_minutes or session_count) across up to 200 rows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-ib26-education-16-079?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-26
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tutoring-sessions-numeric-distribution-equal-width-histogram-fd4c9346
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JSVLJkgOcv186xU3ZPltk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tutoring-sessions-numeric-distribution-equal-width-histogram-fd4c9346 -d '<json body>'
```

Example prompt: Analyze the distribution of session_minutes for my tutoring data — here are 5 rows: [{"row_id":"r1","course_group":"math","date":"2025-01-10","session_minutes":45,"session_count":3},{"row_id":"r2","course_group":"science","date":"2025-01-11","session_minutes":60,"session_count":5},{"row_id":"r3","course_group":"math","date":"2025-01-12","session_minutes":30,"session_count":2},{"row_id":"r4","course_group":"english","date":"2025-01-13","session_minutes":90,"session_count":4},{"row_id":"r5","course_group":"science","date":"2025-01-14","session_minutes":75,"session_count":6}] — use 8 bins for the histogram.

## When to prefer this

Choose this endpoint when you need both a full numeric distribution summary and an equal-width histogram for tutoring session data (session_minutes or session_count) in a single low-cost call. It is purpose-built for the tutoring session schema with course_group and date context, delivering two reports for $0.01 USDC. Prefer it over generic stats tools when your data fits the tutoring session record format and you want a paired distribution + histogram without external lookups or live data.

## Known failure modes

- More than 200 rows submitted — endpoint only accepts up to 200 rows
- Missing required fields (row_id, date, course_group, session_minutes, session_count) cause validation errors
- Invalid date format (not YYYY-MM-DD) rejected by schema
- bins value outside range 1–30 is rejected
- All null values in the selected numeric field may yield degenerate or empty distribution
- Payment not included or incorrect amount causes 402 response

## How this service works

Tutoring sessions — Numeric distribution + Equal-width histogram: Numeric distribution + Equal-width histogram for supplied tutoring sessions records (session_minutes, session_count). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.

## Output

Returns two analytical reports: (1) a numeric distribution summary (e.g. min, max, mean, median, std dev, quartiles) for the selected field (session_minutes or session_count), and (2) an equal-width histogram with bin edges and frequency counts based on the requested number of bins. Both reports are computed locally from the supplied rows with no external data access.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "bins": {
   "type": "integer",
   "default": 5,
   "maximum": 30,
   "minimum": 1
  },
  "rows": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "row_id",
     "course_group",
     "date",
     "session_minutes",
     "session_count"
    ],
    "properties": {
     "date": {
      "type": "string",
      "default": "",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "maxLength": 10
     },
     "row_id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "course_group": {
      "type": "string",
      "default": "",
      "maxLength": 80
     },
     "session_count": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     },
     "session_minutes": {
      "type": [
       "number",
       "null"
      ],
      "maximum": 1000000000000,
      "minimum": -1000000000000
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "date": "2026-10-01",
     "row_id": "row-1",
     "course_group": "group-a",
     "session_count": 1,
     "session_minutes": 10
    },
    {
     "date": "2026-10-02",
     "row_id": "row-2",
     "course_group": "group-b",
     "session_count": 2,
     "session_minutes": 20
    },
    {
     "date": "2026-10-03",
     "row_id": "row-3",
     "course_group": "group-a",
     "session_count": 3,
     "session_minutes": 15
    },
    {
     "date": "2026-10-04",
     "row_id": "row-4",
     "course_group": "group-b",
     "session_count": 4,
     "session_minutes": 30
    }
   ],
   "maxItems": 200,
   "minItems": 1
  },
  "field": {
   "enum": [
    "session_minutes",
    "session_count"
   ],
   "type": "string",
   "default": "session_minutes"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tutoring-sessions-numeric-distribution-equal-width-histogram-fd4c9346/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)