The Roller Coaster Database maintains a website (www.rcdb.com) with data on roller coasters around the world. Some of the data recorded include whether the coaster is made of wood or steel, and the maximum speed achieved by the coaster in miles per hour. The box plots display the distributions of speed by type of coaster for 145 coasters in the United States as downloaded from the site in November 2003.
![](data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAA0oAAAE2CAIAAADQx/UpAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAU3klEQVR4nO3da1Li3BqA0VB1RkMYjWXiDHoaSabRM2hiORrCdDi5AIICiiKJ77fWj25JEIO7pR93Lvxvs9kkAABE8b+xNwAAgFuSdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjy7rv+/v079iYAACR//vwZPpB3N7D/bgIAjOJwvkneAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHQTw8PIy9CZz28vIy9iYA/y3yDuIIkxFtqkZ6LmNvAvCfI+8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAoci785pqsSjny80yG3tLAAA+LUDe9RXWdB+l5Wo1r/JkuQuypsqfH5dF+oVHrfNZXrd/z2+3oQAAd/Dr867OF2VSrjZdw7WhN8ubbLlb1zzX6+Txa4+bLTerrhtvtJkAAHfy2/OuruskLR+H+bm0WK2SRbVfV5VNUo61ZQDAf8rDw8PLy8vlJffx2/Ou05RVXWz3x6bz7d7Uplr0O1fLxazspuL69a/7cfeLdnc+uRwA4JPakjvsubHaLvn9eZcVZVqXdT6bdQfeFWmbZ9t9s4//VsnTos76pZ32TlW62myGvbiLfFENq84tBwD4mhHbLvn9edftkN3Mu9MgmqN5uiRN0+b54H5NVdVZsdztxS2yMu8n/eZnlpvBAwCu9GYCbyy/Pu86bdNttjtY63y2KE/Nvq2bppunmx0tWzdt951Zfnr+7u/fvzfd9HG0//LG3gT4D/ETx48avSRI3v2YDzcPF955mH573jVVtS6Kbqqtm8Yr+sY7N/uWnuq++szyM/78+fNmyW8MPq8FIWmIyfITB+Ed/pgPs3d2zn5PXddFtou5Ye/qqbvN07Spn5siTT+3HADgSlPYM5tEyLv+AsS7I+66I+yS7O3UXVuAWdaH3yKf706MbapFNV8tzy6/75MAAAIZdwLv9+ddd/3hJJ/N8v3NXZqlj1ladidctMuyYU1bgrvD7LpdstnuM04s766X3B2adxCPAADnvOm5EQvvt+ddWvRHzXXnVpxaudoUhwuy0/c7ufzcfQEATnhfcmbvAAC4AXkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7iOPh4WHsTbiZSM8F4M7kHQTx8vIy9iYAMAnyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQChfyLumWizKJknL1apIk6TOZ3W2WWa33zYAAK52Zd5t0+5QtlzWs9liG3sAAIzqqrxrqqc3bddrAy+b5U/Vo8ADABjbVXm3bpJytekbrqny5/3yZr1u/2jaP+QdAMC4rsq7eZrU7xquzmd5fdNtAgDgy67Ku/QxWy9ms93NclYerMwyZ1cAAIzuulMr0uJfWb89t2JYUxbqDgBgfNdeGCUtVpvizf7YbOm6KAAAE/Glyxq3Pbe59YYAAHALX8m7Nxe/S13yDgBgMq7NuxPnyTblYlbaQQsAMAnX5V2dn7sGSrdG4AEAjO6qvKvrLu7e74zt99Z2K10bBQBgZFefOXvqQLu0WC2bmWsbAwCM78p3rUjPvPVYs16n6fxmWwUAwBdd964VRZHNThxk11RPdfZvlb7ertaFyxwDAIzgumPvhjMr8tf3JTuwOHyLsmxZfGuzAAD4mi9d1hgAgKmSdwAAoVyZd5+7enGd51/cHAAAvudHZu+y5fInHhYAgA9dmXd1d1qFN5kFAJis6/KuDbtlkTbVYjZrPrunFgCAO7oq77Kiv9xJWqw23QfdVF53kJ3ZPACAyfj6sXfbi+C1mnK45p3MAwAY3bWXNU6Wy3m1WJTN8Zq+7JJ+p63IAwAY0VdOrThyeABev9O2OzIvLxyVBwAwiq/vnD05S9fmX7/Ltq6TTN8BANzfV/Lu/BmzdV1/b3MAAPieK/PugwPrsizrJu7SsjB1BwAwig/zbre7Neln7VbF5Xu3d9ncYrMAAPiaz8zeuXwxAMCv8Ym8y5wkAQDwa3z9zNk3mqpaFw65AwAY2c3ybt00H98JAIAf9om8e38p49Oy5Xc3BgCA77rZ7B0AAFMg7wAAQvnMmbOfui5Knec32BwAAL7nZrN38zRd3+qxAAD4qpvlXVpceLMyAADu5DNnztZ14srGAAC/w2dm73ZXRvHmZAAAk/dh3rVNt7nHhgAAcAsujAIAEIq8AwAIRd4BAIQi7wAAQpF3AAChyDsAgFDkHQBAKPIOACAUeQcAEIq8AwAIRd4BAIQi7wAAQpF3AAChyDsAgFDkHQBAKPIOACAUeQcAEIq8gyAeHh7G3oRbenl5GXsTAH4reQdx3DaJ2l4cq7GCpSrAnck7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAglP9W3jXVYlHOl5tlNvaWAAD8kLHyrg+tZnsjW26K9cHtbkFXYK93SsvVqki/9yXrfJbX7d/z7z0MAMCkjZV3abHazPve2qZcsto89jV3UHLdndqFT8m/b7dd0jfjqvsK334gAIAJG3PnbFaUaV2u100bct3ttCiyMq+b9fZ2p3mu58Xq+203SOcxp+4eHh5eXl4uLwE45HUDAhv12Luh58qqLrYHw2VZltSt9oPhHs1zkxXF62cc7tN9s8P2wqrdbtkkTdPDnbMHn7KbQ9wfnrfbW5z9hiP12lfkw9dlr9HAh7xuQGAjn1rxpue6j4Y/h9tt3aWP+7rryqvOVpt+Mq9LtsWs2cbXhVXdrXW52rS5133Y7PKuvVGlq80mHT47X1Sr1bzadmC1eMr+bTbr9hOqqi3MW00f3oHXaOBaXjcgmLHPnD3qu/av5aqsFuU2qeqqTvdzd031VDbZcrejtv2oXGzvmVxa1T5GuZ3KG/YGbx+tqrNiuTvGbzuLuFluNn0OZtuj/dI0Wd/xu/ENb34RB/iQ1w2Iauy82yZXn2Lr7jyLdL5Oy7J+boq0vb0LsNa6aZI0Ozh2rj+Qrj9SL7m8ar6ffHs99q57tDbkZoeb8noU4Hx+brru79+/33zCt9W+NL+/ebjQC/dlb76BTMdYQ/Nf+JHxugHhjZ53SfqY9T1XJ23drdoFwwkWz828aWvv+L7N0WkX8zRN6surmvX67JVQvnSxlT9//rxZMm7wHb4KD7+F+138KpG+V8FSNdLQTI3XDQhv/Lzb7RrNkza3+gXdDtu8XOTZcnNwt77YDk+76GfgsqK7Pt7ZVWk9PzyW7+jRmn6K8BcdVXeRV2fgWl43IKoJ5N32ALx19pge3S6LoyTbXjYlz+vd2RT9UXXZ5VXDsX27Nf1kXpPPFt3EXfspi3y+Oy+2qRbVfDX9k2Q/5Bdx4FpeNyCYSeRdF2Hp+vF1Ii0ryuz58e3E2va6xLsj5rqb2Yerugub5LN8WNNfGGW3U3ZYsTv8rlua7S+h0v61XKVVf2mUZrFIvv+eGT/qzeuyV2rgQ143ILBp5F13suvR7fTgnIrj5atNcWrFpVVt4W0+ueJ4SXbua03N+1dkr9HAZV43ILCJ5B0AALch7wAAQpF3AAChyDsAgFDkHQBAKPIOACAUeQcAEIq8AwAIRd4BAIQi7wAAQpF3AAChyDsAgFDkHQBAKPIOACAUeQdxPDw8TPwBAbgDeQdBvLy8jL0JAEyCvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5N0N/P37d+xNAADYknff9efPn8/crU3AT96TezIu02Rcpsm4TJBBmabRx0XeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjy7k6c2TRNxmWajMs0GZcJMijTNPq4yDsAgFDkHQBAKPLu5ppqsSib4eO0XK2K9HBtnc/yuvsgW26W2f23jmEMkjfffuMyut0QHP3QGJfRXHwhMy53NYzFqe/1hYEwRj/uzLhMpQHk3W214/qU/Nts0mQ7xotFsh/dfsF8udlk/RDPcj9199cOQvezlR0vMi6j2r7gvXm5My7j6b/3SbnaFLuXstcXMuNyV4etcGLN6YEwRj/u3LhMqAHk3U01z0mxT/W0+FfWi7J+boq0W1RXXeevhsHMlstslue1H7q7aqqnep6lTX2wzLiMq2+797/jGpcxrZsmScvH3UvZY5aWzbr9IDEu95YWbWQPuX3swkAYo593Zlym1ADy7qbS4ui/qHQ+b/+cD4vqum4H9HUgsyxL8m6Zn7l7qfNFU2yK9aI+yDvjMqq6fX1rv/9v2864jKv/bpdP1WM/MO3/SvPlZvjGG5eJuDAQxmg8U2oAefeTmvU6Lf9lu4/bUX57j/W6GX4l5sfVeZWu2l+cmupwqXEZU1NVdZKWaT2b5f2C/SyecRlXW9xlt2NpViZHe82Ny0RcGIjEGE3GqA0g735QXdXZv9XBwKXpu7HlPppqUWer5emfIuMykua5bpI0a5Jss1nujlTJ57uWMC5j2u5YGnLh6H8g4zIRFwbCGE3CuA0g735MnZ/vCe6rqarknyNPJinNiuV2d8Y2KKqqyYqRt4o6n1XparNJh+ieNQ7Oh6uM3QDy7mdsJ4sOlnT74Jvd0cn9XfqZ2rn++3l1VdZ12e9m2mny2WzY52RcJqQ/UmW9+8i4jKY7JDJb9v8zdYeQz/NZ3ld3alwm4tJAGKMJmEADyLsfMJwZvdr9qltX1bwo0reHUXbnpmWF34fvoM24zeut3bnp27kI4zKe/ozM/WllO8PrnXEZ0dujhLrBqF4/NC4TcGEgjNHYptEA8u7WdlfDWewni7qjxbu/s6JMF8OvwLvfjjd+4sZnXMaTFkVW5vvD7Y6++8ZlPH13l/uLNnRnwKTZdhe6cZmICwNhjMY0mQaQdze1vx71gTTbXz2qaMd4sR1zVxKfDOMyou773f7UzGb7W/vvvnEZz/Z7vxuXo8sSGpf72v+v0h1RcjgSFwbCGP280+MypQaQdzd1vBfwhP5SiHfaGE47NQbGZUQXfmqMy3gufe+Nyx1d+l/lwkAYox92elym1ADyDgAgFHkHABCKvAMACEXeAQCEIu8AAEKRdwAAocg7AIBQ5B0AQCjyDgAgFHkHABCKvAMACEXeAQCEIu+A+Op8lte7G9lys8yaKn9+XBbpXTejqRaLshk+TsvV6qMv392/zj6+3/c25dSW/OBXBu5A3gGxDWnXN11/uy2X2Szvqubx3puSFqvN/LA0Lxj6q93snymstPhX1vvWPLF6tWxmi1n9iQgFpkfeAZE1VVV3KVdkuyVtuaySNp1G3KgP7dtumX185x/SffU2RReLROHBryPvgMCa57qboGrKqi6WB4X3r6yfRtysy+q8m1bLliO23SAryrQuy0U+H7MzgevJOyCwdD5v4y7pd9HODmbD0sds/jx8eHBcXltUSb69cWLq7Oie16x9PdAtLcv5B5s8zDcmWfb6CAcPnZarf8nTbq/q9jDC10ffTbR9/kkdf4E3x+GlRZGVeV1XVZOZwYNfRN4BkXWVVG9Dp0u8XeGkxXKbK90s2TZu6rxebjbLPna6Pw5iaBtA+576/Npdfe1XXt7guupTLU0PMjBbrsptwjXl4qlcbZZV/wX7Z9Qm2Wb13K1v9hNtn3tSg/az2nssk+7+TflUPR4G3jxNk7p5M/sJTJ28A0I7CJ3eYeOdum/ymoSvk1b1MP21PYQvfczSsvnk2m2ubWfjttNh5ze3Wa/7v+fz05Nl2+m1pq+ug9vbqchkvW6XHn3q2Sd18JDtPZr18IhNsz58gN305/vHBSZM3gHBtS23ObwkSfJuV+1b8/Q4dert/N9xczX1c1N097y0drfyaDbuvO2xglfb74Q+7+2TOud0yH30WcCkyDvgP6C7JElxdN25fs7tozMGhtTZzagNM3+vhuS5uDbZrbx2ez9Xg19y3UTcrgpN38FvIu+AwI6vXjxE3v48gm5mLbvmgLLLlyI+eXngq7cY4PvkHRDa+t1ZAQcnKnxk2N+63/N5cg/lxbWf2Gl68v4/uS/03GF9p60biQq/j7wDgju7FzY7N3W3S5rdLtL96bdH8311Vc2LIr289rNHvO3s7n97b5/UddLs0Z5Z+D3kHRBenc8Wr3tOm+ppuFDJu+TbnlW6Ox0iK3b7Wofr+zb9FYer4VTValHPV8sP1+5PlR0eOxkuapf0lyM5dbXgL56p2pw/xu/sk7rqga+b8gNGJu+A2IYzZLvzHmZvlr2/a5Y8zWbNibu8vltsm2WzcjjQLvvU2u2be9X9qrQss6SpLxzEt23Fo9m+4W0sen0VLpP84u2jJ3f6SW0bd/cpTVbXJx9hmPM7fFM34BeQd0BgbXhtZ9iWm83Hd5/3516ccfkhLq09Xlec/Qq9E+8U8f6xP7p96OSTSi8901fDnN+VM37A6OQdwLRsz/0Y/50i+us1D1c9Bn4VeQcwNWmxWiVv3/nszvrrx1y+FAwwVfIO+G/bvqXY8OHFN7O4q27v6WO1WGxP1rjSd59UUy3ydbnaSDv4neQd8N/2uaPyRvHJA+RO+O6T+vpXBqZA3gEAhCLvAABCkXcAAKHIOwCAUOQdAEAo8g4AIBR5BwAQyv8BS4LpkvLPQxsAAAAASUVORK5CYII=)
Which type of roller coaster has a higher percentage of coasters that go faster than 50 mph?
◦
Wooden
◦
Steel
◦
There are an equal proportion of both types of roller coasters reaching this speed.
◦
This is impossible to determine from the box plots.