StatTutor Lesson - Interpreting Histograms

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Interpreting histograms
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      Question 1

      77

      Question 1.

      True or false: We only use shape to describe graphs for quantitative data.

      		A.
      		B.
      Incorrect. This is a correct statement.
      Correct. This is a correct statement.
      Incorrect. Try again.
      2

      Question 2

      135

      Question 2.

      True or false: When identifying center, one must take the heights of the bars into account.

      		A.
      		B.
      Incorrect. This is a correct statement.
      Correct. This is a correct statement.
      Incorrect. Try again.
      2

      Question 3

      208

      Question 3.

      True or false: Spread tells us about the variability of the data in a histogram.

      		A.
      		B.
      Incorrect. This is a correct statement.
      Correct. This is a correct statement.
      Incorrect. Try again.
      2

      Question 4

      251

      Question 4.

      True or false: Outliers are always miscoded data points.

      		A.
      		B.
      Incorrect. Only some outliers are miscoded data points; many represent valid data values.
      Correct. Only some outliers are miscoded data points; many represent valid data values.
      Incorrect. Try again.
      2

      Question 5

      289

      Question 5.

      What is the shape of this histogram?

      		A.
      		B.
      		C.
      		D.
      Incorrect. Since this histogram is single peaked and tails out on the right, it is described as right-skewed.
      Correct. Since this histogram is single peaked and tails out on the right, it is described as right-skewed.
      Incorrect. Try again.
      2

      Question 6

      298

      Question 6.

      What is an appropriate value for the center of this histogram?

      		A.
      		B.
      		C.
      		D.
      		E.
      Incorrect. This histogram would balance at about '20' if each bar were a block of wood.
      Correct. This histogram would balance at about '20' if each bar were a block of wood.
      Incorrect. Try again.
      2

      Question 7

      304

      Question 7.

      Which minimum and maximum values are valid for this histogram?

      		A.
      		B.
      		C.
      		D.
      Incorrect. The smallest observation is about zero and the largest is about 57.
      Correct. The smallest observation is about zero and the largest is about 57.
      Incorrect. Try again.
      2

      Question 8

      310

      Question 8.

      Are there any outliers?

      		A.
      		B.
      Incorrect. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Correct. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Incorrect. Try again.
      2

      Question 9

      333

      Question 9.

      What is the shape of this histogram?

      		A.
      		B.
      		C.
      		D.
      Incorrect. Since this histogram is single peaked and tails out on the left, it is described as left-skewed.
      Correct. Since this histogram is single peaked and tails out on the left, it is described as left-skewed.
      Incorrect. Try again.
      2

      Question 10

      343

      Question 10.

      What is an appropriate value for the center of this histogram?

      		A.
      		B.
      		C.
      		D.
      		E.
      Incorrect. This histogram would balance at about '11' if each bar were a block of wood.
      Correct. This histogram would balance at about '11' if each bar were a block of wood.
      Incorrect. Try again.
      2

      Question 11

      353

      Question 11.

      Which minimum and maximum values are valid for this histogram?

      		A.
      		B.
      		C.
      		D.
      Incorrect. The smallest observation is about two and the largest is about 15.
      Correct. The smallest observation is about two and the largest is about 15.
      Incorrect. Try again.
      2

      Question 12

      360

      Question 12.

      Are there any outliers?

      		A.
      		B.
      Incorrect. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Correct. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Incorrect. Try again.
      2

      Question 13

      373

      Question 13.

      What is the shape of this histogram?

      		A.
      		B.
      		C.
      		D.
      Incorrect. This histogram is single-peaked and the tails on both sides are approximately the same length, so this histogram's shape is bell-shaped.
      Correct. This histogram is single-peaked and the tails on both sides are approximately the same length, so this histogram's shape is bell-shaped.
      Incorrect. Try again.
      2

      Question 14

      382

      Question 14.

      What is an appropriate value for the center of this histogram?

      		A.
      		B.
      		C.
      		D.
      		E.
      Incorrect. This histogram would balance at about 110 ounces if each bar were a block of wood.
      Correct. This histogram would balance at about 110 ounces if each bar were a block of wood.
      Incorrect. Try again.
      2

      Question 15

      394

      Question 15.

      Which minimum and maximum values are valid for this histogram?

      		A.
      		B.
      		C.
      Incorrect. The smallest observation is about 50 and the largest is about 160.
      Correct. The smallest observation is about 50 and the largest is about 160.
      Incorrect. Try again.
      2

      Question 16

      399

      Question 16.

      Are there any outliers?

      		A.
      		B.
      Incorrect. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Correct. There are no observations which would cause one to exclaim, "Oh, wow! That's an outlier!!"
      Incorrect. Try again.
      2