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  • Pregunta: In a physical fitness study 10 students were evaluated on sit-ups (x) and push-ups (y). With the following results; A. Choose the correct Indicate the type of correlation Select one: A . Negative B. positive C. is

    In a physical fitness study 10 students were evaluated on sit-ups (x) and push-ups (y). With the following results;

    student submitted image, transcription available below

    A. Choose the correct

    Indicate the type of correlation

    Select one:
    A . Negative
    B. positive
    C. is not linear
    D. there is no

    B. Choose the correct

    Find the correlation coefficient is .986

    Find the best-fitting equation

    Select one:
    A. y = 2.173x - 9.95
    B. y = -986 x+ 2.173
    C. y = -9.95x+ 2.173

    Muestra el texto de la transcripción de la imagen
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    Hay 2 pasos para resolver este problema.
    Solución
    Paso 1


    Table:



    X

    Y

    X^2

    Y^2

    XY


    10

    15

    100

    225

    150


    13

    24

    169

    576

    312


    15

    30

    225

    900

    450


    18

    39

    324

    1521

    702


    22

    51

    484

    2601

    1122


    26

    63

    676

    3969

    1638


    27

    66

    729

    4356

    1782


    29

    72

    841

    5184

    2088


    30

    75

    900

    5625

    2250


    35

    76

    1225

    5776

    2660

    Total

    225

    511

    5673

    30733

    13154


    Correlation coefficient = r =

    r=nxy(x)(y)nx2(x)2ny2(y)2

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    Paso 2
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    Respuesta
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Texto de la transcripción de la imagen:
Indicar el tipo de correlación Select one: A. negativa B. positiva C. no es lineal D. no hay