DCL/ex4_6.html

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.DCexercise .datacamp-exercise {
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     border-radius: 10px 10px 10px 10px !important;
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     *[class*="lm_"], .ace_gutter, textarea[class*="ace_"], .ace_scroller {
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</style>
      </head>
      <body>
      <div data-datacamp-exercise data-lang='r' data-height =320><code data-type="pre-exercise-code">
    cs <- c(23, 19, 30, 22, 23, 29, 35, 36, 33, 25)
    ts <- c(430, 430, 333, 410, 390, 377, 325, 310, 328, 375)
    mod <- lm(ts ~ cs)
  </code>
  <code data-type="sample-code">
    # assign the model summary to the variable `s`
    
    
    # check names of entries in `s`
    
    
    # save the R^2 of the regression to the variable `R2`


  </code>
  <code data-type="solution">
    # assign the model summary to the variable `s`
    s <- summary(mod)
    
    # check names of entries in `s`
    names(s)
    
    # save the R^2 of the regression to the variable `R2`
    R2 <- s$r.squared
  </code>
  <code data-type="sct">
    test_predefined_objects("mod")
    test_function("names", args = "x")
    test_object("s")
    test_object("R2")
  </code></div>
      </body>
      </html>