QUESTION IMAGE
Question
rob is investigating the effects of font size on the number of words that fit on a page. he changes the font size on an essay and records the number of words on one page of the essay. the table shows his data.
words per page
| font size | 14 | 12 | 16 | 10 | 12 | 14 | 16 | 18 | 24 | 22 |
| word count | 352 | 461 | 340 | 407 | 435 | 381 | 280 | 201 | 138 | 114 |
which equation represents the approximate line of best fit for data, where x represents font size and y represents the number of words on one page?
o y = -55x + 407
o y = -41x + 814
o y = -38x + 922
o y = -26x + 723
Step1: Identificar variables
x: Tamaño de fuente, y: Número de palabras
Step2: Usar una calculadora de regresión lineal
Insertar los valores de x (tamaño de fuente) e y (conteo de palabras) en una calculadora o software de regresión lineal.
Step3: Obtener la ecuación
La ecuación de la recta de mejor ajuste obtenida es y = - 41x + 814.
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y = - 41x + 814