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The medians of the following dot plots are 6, 12, 13, and 15, but not in that order. Match each dot plot with its median.
<p>A dot plot, 0 to 20 by twos. The plot begins with 1 in increments of 1, the number of dots above each increment is 1, 1, 0, 0, 2, 2, 1, 2, 1.</p>
<p>A dot plot, 0 to 20 by twos. The dot plot begins with 10 in increments of 1, the number of dots above each increment are 2, 2, 0, 0, 0, 3, 0, 1, 1, 1.</p>
<p>A dot plot, 0 to 20 by twos. The dot plot begins with 5 in increments of 1, the number of dots above each increment are 1, 1, 0, 0, 1, 0, 2, 0, 1, 1, 3. </p>
<p>A dot plot, 0 to 20 by twos. The dot plot begins with 8 in increments of 1, the number of dots above each increment is 2, 0, 2, 0, 0, 2, 1, 0, 3.</p>
Here is a dot plot that shows the ages of teachers at a school.
Which of these statements is true of the data set shown in the dot plot?
<p>A dot plot, age in years, 30 to 64 by twos. Beginning with 30 in increments of 1, the number of dots above with increment is 1, 1, 2, 2, 2, 2, 4, 2, 1, 2, 2. The number of dots at 46 is 1, at 47 is 1, at 50 is 2, at 55 is 1, at 62 is 1, and at 64 is 1.</p>
The mean is less than the median.
The mean is approximately equal to the median.
The mean is greater than the median.
The mean cannot be determined.
Ten sixth-grade students reported the hours of sleep they get on nights before a school day. Their responses are recorded in the dot plot.
Looking at the dot plot, Lin estimated the mean number of hours of sleep to be 8.5 hours. Noah's estimate was 7.5 hours. Diego's estimate was 6.5 hours.
Which estimate do you think is best? Explain how you know.
Triangle