{
    "data_id": "525",
    "name": "baseball-hitter",
    "exact_name": "baseball-hitter",
    "version": 1,
    "version_label": null,
    "description": "**Author**: Lorraine Denby    \r\n**Source**: [StatLib](http:\/\/lib.stat.cmu.edu\/datasets\/)  \r\n**Please cite**:   \r\n\r\n**Analysis of Baseball Salary Data: Hitters**\r\nThis analysis describes and summarizes the relationships between 1987 salaries of major league baseball players and the player's performance. The salary data were taken from Sports Illustrated, April 20, 1987. The salary of any player not included in that article is listed as an NA. The 1986 and career statistics were taken from The 1987 Baseball Encyclopedia Update published by Collier  Books,  Macmillan  Publishing  Company, New York. The team attendance figures were obtained from the Elias Sports Bureau, personal conversation.  \r\n\r\nThe data consist of data on the regular and leading substitute hitters in 1986 of North American Major League Baseball players. \r\n\r\n### Attribute information  \r\nThere is one line per hitter. The variables are:\r\nhitter's name,  \r\nnumber of times at bat in 1986,  \r\nnumber of hits in 1986,  \r\nnumber of home runs in 1986,  \r\nnumber of runs in 1986,  \r\nnumber of runs batted in in 1986,  \r\nnumber of walks in 1986,  \r\nnumber of years in the major leagues,  \r\nnumber of times at bat during his career,  \r\nnumber of hits during his career,  \r\nnumber of home runs during his career,  \r\nnumber of runs during his career,  \r\nnumber of runs batted in during his career,  \r\nnumber of walks during his career,  \r\nplayer's league at the end of 1986,  \r\nplayer's division at the end of 1986,  \r\nplayer's team at the end of 1986,  \r\nplayer's position(s) in 1986,  \r\nnumber of put outs in 1986,  \r\nnumber of assists in 1986,  \r\nnumber of errors in 1986,  \r\n1987 annual salary on opening day in thousands of dollars,  \r\nplayer's league at the beginning of 1987,  \r\nplayer's team at the beginning of 1987.  ",
    "format": "ARFF",
    "uploader": "Joaquin Vanschoren",
    "uploader_id": 2,
    "visibility": "public",
    "creator": null,
    "contributor": null,
    "date": "2014-09-29 00:07:56",
    "update_comment": "set target feature",
    "last_update": "2014-10-07 01:18:25",
    "licence": "Public",
    "status": "active",
    "error_message": null,
    "url": "https:\/\/www.openml.org\/data\/download\/52637\/baseball-hitter.arff",
    "default_target_attribute": "1987_annual_salary_on_opening_day_in_thousands_of_dollars",
    "row_id_attribute": null,
    "ignore_attribute": "\"hitters_name\"",
    "runs": 0,
    "suggest": {
        "input": [
            "baseball-hitter",
            "This analysis describes and summarizes the relationships between 1987 salaries of major league baseball players and the player's performance. The salary data were taken from Sports Illustrated, April 20, 1987. The salary of any player not included in that article is listed as an NA. The 1986 and career statistics were taken from The 1987 Baseball Encyclopedia Update published by Collier Books, Macmillan Publishing Company, New York. The team attendance figures were obtained from the Elias Sports "
        ],
        "weight": 5
    },
    "qualities": [],
    "tags": [
        {
            "tag": "sport",
            "uploader": "2"
        },
        {
            "tag": "study_93",
            "uploader": "2"
        }
    ],
    "topics": [
        {
            "topic": "Book-based",
            "uploader": "8111"
        }
    ],
    "features": [
        {
            "name": "1987_annual_salary_on_opening_day_in_thousands_of_dollars",
            "index": "21",
            "type": "numeric",
            "distinct": "150",
            "missing": "59",
            "target": "1",
            "min": "68",
            "max": "2460",
            "mean": "536",
            "stdev": "451"
        },
        {
            "name": "hitters_name",
            "index": "0",
            "type": "nominal",
            "distinct": "322",
            "missing": "0",
            "ignore": "1",
            "distr": []
        },
        {
            "name": "number_of_times_at_bat_in_1986",
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            "type": "numeric",
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            "missing": "0",
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            "max": "687",
            "mean": "381",
            "stdev": "153"
        },
        {
            "name": "number_of_hits_in_1986",
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            "missing": "0",
            "min": "1",
            "max": "238",
            "mean": "101",
            "stdev": "46"
        },
        {
            "name": "number_of_home_runs_in_1986",
            "index": "3",
            "type": "numeric",
            "distinct": "36",
            "missing": "0",
            "min": "0",
            "max": "40",
            "mean": "11",
            "stdev": "9"
        },
        {
            "name": "number_of_runs_in_1986",
            "index": "4",
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            "missing": "0",
            "min": "0",
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            "mean": "51",
            "stdev": "26"
        },
        {
            "name": "number_of_runs_batted_in_in_1986",
            "index": "5",
            "type": "numeric",
            "distinct": "103",
            "missing": "0",
            "min": "0",
            "max": "121",
            "mean": "48",
            "stdev": "26"
        },
        {
            "name": "number_of_walks_in_1986",
            "index": "6",
            "type": "numeric",
            "distinct": "89",
            "missing": "0",
            "min": "0",
            "max": "105",
            "mean": "39",
            "stdev": "22"
        },
        {
            "name": "number_of_years_in_the_major_leagues",
            "index": "7",
            "type": "numeric",
            "distinct": "22",
            "missing": "0",
            "min": "1",
            "max": "24",
            "mean": "7",
            "stdev": "5"
        },
        {
            "name": "number_of_times_at_bat_during_his_career",
            "index": "8",
            "type": "numeric",
            "distinct": "314",
            "missing": "0",
            "min": "19",
            "max": "14053",
            "mean": "2649",
            "stdev": "2324"
        },
        {
            "name": "number_of_hits_during_his_career",
            "index": "9",
            "type": "numeric",
            "distinct": "288",
            "missing": "0",
            "min": "4",
            "max": "4256",
            "mean": "718",
            "stdev": "654"
        },
        {
            "name": "number_of_home_runs_during_his_career",
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            "missing": "0",
            "min": "0",
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        },
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        },
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            "missing": "0",
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            "mean": "330",
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        },
        {
            "name": "number_of_walks_during_his_career",
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            "type": "numeric",
            "distinct": "248",
            "missing": "0",
            "min": "0",
            "max": "1566",
            "mean": "260",
            "stdev": "267"
        },
        {
            "name": "players_league_at_the_end_of_1986",
            "index": "14",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "players_division_at_the_end_of_1986",
            "index": "15",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "players_team_at_the_end_of_1986",
            "index": "16",
            "type": "nominal",
            "distinct": "24",
            "missing": "0",
            "distr": []
        },
        {
            "name": "players_position(s)_in_1986",
            "index": "17",
            "type": "nominal",
            "distinct": "25",
            "missing": "0",
            "distr": []
        },
        {
            "name": "number_of_put_outs_in_1986",
            "index": "18",
            "type": "numeric",
            "distinct": "232",
            "missing": "0",
            "min": "0",
            "max": "1378",
            "mean": "289",
            "stdev": "281"
        },
        {
            "name": "number_of_assists_in_1986",
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            "type": "numeric",
            "distinct": "161",
            "missing": "0",
            "min": "0",
            "max": "492",
            "mean": "107",
            "stdev": "137"
        },
        {
            "name": "number_of_errors_in_1986",
            "index": "20",
            "type": "numeric",
            "distinct": "29",
            "missing": "0",
            "min": "0",
            "max": "32",
            "mean": "8",
            "stdev": "6"
        },
        {
            "name": "players_league_at_the_beginning_of_1987",
            "index": "22",
            "type": "nominal",
            "distinct": "2",
            "missing": "0",
            "distr": []
        },
        {
            "name": "players_team_at_the_beginning_of_1987",
            "index": "23",
            "type": "nominal",
            "distinct": "24",
            "missing": "0",
            "distr": []
        }
    ],
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