Poll Everywhere lets your audience respond using text messages (SMS), Twitter, or the web in real-time. The best part is you can embed live audience responses and live charts right inside your Microsoft PowerPoint presentation, free!

Find the z-scores for which 98% of the distribution’s area lies between –z and z.

Poll responses are kept private

  • -2.05 and 2.05
  • -3 and 3
  • -2.33 and 2.33
  • -1.5 and 1.5
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