title: Bar plot is plotting negative x-values in array, despite no negative values in array
body: <p>I'm getting this bug where, when plotting two arrays, I have negative x-values, despite there not being any negative values in my x-axis array. My x-axis should range from my minimum 0.005 to my max 0.995. There shouldn't be any values defined outside this range. Why am I getting I'm not sure why this is happening?</p>
  
  <pre><code>print(xValsAppx)
  print()
  print(probabilityX)
  
  plt.bar(xValsAppx, probabilityX)
  plt.xlabel('Sample')
  plt.ylabel('Probability of Observing the Sample')
  plt.title('Normal Distribution for a = 0, b = 1')
  </code></pre>
  
  <p>where xValsAppx is</p>
  
  <pre><code>[0.005 0.015 0.025 0.035 0.045 0.055 0.065 0.075 0.085 0.095 0.105 0.115
  0.125 0.135 0.145 0.155 0.165 0.175 0.185 0.195 0.205 0.215 0.225 0.235
  0.245 0.255 0.265 0.275 0.285 0.295 0.305 0.315 0.325 0.335 0.345 0.355
  0.365 0.375 0.385 0.395 0.405 0.415 0.425 0.435 0.445 0.455 0.465 0.475
  0.485 0.495 0.505 0.515 0.525 0.535 0.545 0.555 0.565 0.575 0.585 0.595
  0.605 0.615 0.625 0.635 0.645 0.655 0.665 0.675 0.685 0.695 0.705 0.715
  0.725 0.735 0.745 0.755 0.765 0.775 0.785 0.795 0.805 0.815 0.825 0.835
  0.845 0.855 0.865 0.875 0.885 0.895 0.905 0.915 0.925 0.935 0.945 0.955
  0.965 0.975 0.985 0.995]
  </code></pre>
  
  <p>and probabilityX is</p>
  
  <pre><code>[0.00977, 0.00995, 0.00999, 0.0, 0.00966, 0.01022, 0.01027, 0.01023, 0.0, 
  0.01046, 0.01008, 0.0, 0.00967, 0.0096, 0.0102, 0.01008, 0.00977, 0.0, 
  0.00961, 0.01003, 0.0095, 0.00944, 0.0106, 0.0, 0.0099, 0.0097,
  0.01001,0.01017, 0.01014, 0.00977, 0.00998, 0.01013, 0.00978, 0.01017,
  0.00939, 0.0, 0.00965, 0.0099, 0.01, 0.00973, 0.01009, 0.00968, 0.01003,
  0.01009, 0.01022, 0.01022, 0.01022, 0.0, 0.01013, 0.00997, 0.00938, 0.0103,
  0.00998, 0.00966, 0.01034, 0.00989, 0.0094, 0.0, 0.01071, 0.01065, 0.00945,
  0.0098, 0.00997, 0.01, 0.0099, 0.01002, 0.00945, 0.00974, 0.01028, 0.01013,
  0.01041, 0.00997, 0.01049, 0.0094, 0.00991, 0.00997, 0.01036, 0.01036,
  0.00994, 0.01024, 0.01044, 0.01068, 0.00992, 0.0, 0.00996, 0.00955, 0.01014,
  0.00991, 0.00977, 0.01013, 0.00989, 0.01027, 0.01037, 0.01016, 0.00957,
  0.01001, 0.01004, 0.01054, 0.00946, 0.01005]
  </code></pre>
  
  <p>Image here:</p>
  
  <p><a href="https://i.stack.imgur.com/K9qRl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/K9qRl.png" alt="enter image description here"></a></p>