Answers Common Core Math 7 - MA3107 CRVariation in Predictions and Estimates

Analyzing Dot Plots Answers

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The dot plots show the number of hours a group of fifth graders and seventh graders spent playing outdoors over a one-week period. Time Spent Playing Outdoors for Fifth Graders and Seventh GradersWhich statement correctly compares the shape of the data in the plots?

Both sets of data have a peak at 5 hours and 6 hours.

In the seventh-grade data, the left side of the data looks similar to the right side, but not in the fifth-grade data.

In both sets, the data cluster around 3 hours.

There is a gap in the seventh-grade data, but not in the fifth-grade data.

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Walter’s history test scores and Janine’s history test scores are shown on the dot plots below.Walter’s History Test ScoresJanine’s History Test ScoresIf each student gets 65 on the next test, which explains the measure of center that would be most affected?

Their means will be most affected because this value will be an outlier.

Their modes will be most affected because the distribution has changed.

Janine’s median will be more affected than Walter’s median because her overall scores were greater.

Walter’s median will be more affected than Janine’s median because there was a gap in his data.

The amount that two groups of students spent on snacks in one day is shown in the dot plots below.Group AGroup BWhen looking at the differences in the statistical measurements of Group A and Group B, which differences have a value of $1 or less?

the median and the mode

the mean and the range

the mean and the median

the mode and the range

There are twenty classes at each of two middle schools. The number of students in each class at each school is shown in the dot plots below.Number of Students in Each Class at Poplar Middle School Number of Students in Each Class at Oak Middle SchoolWhich statement correctly compares the mean number of students for the data in the plots?

There are about 2 more students in each class at Poplar Middle School than at Oak Middle School.

There are about 2 more students in each class at Oak Middle School than at Poplar Middle School.

There are about 5 more students in each class at Poplar Middle School than at Oak Middle School.

There are about 5 more students in each class at Oak Middle School than at Poplar Middle School.

A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have. The dot plots below show the results.StudentsTeachersWhich compares the modes of the data?

The mode for the students is 2 and the mode for the teachers is 4.

The mode for the students is 0 and the mode for the teachers is 1.

The mode for the students is 4 and the mode for the teachers is 8.

The mode for the students is 2 and the mode for the teachers is 1.

The students in Class A and Class B were asked how many pets they each have. The dot plots below show the results.Students in Class A Students in Class BWhat is the difference between the ranges in the dot plots?

Katelyn’s biology test scores are shown below. Biology Test ScoresKatelyn’s math test scores are shown below.Math Test ScoresKatelyn says that her biology test scores are much higher than her math test scores. Based on the shape of the data, which explains whether Katelyn is correct?

Katelyn is correct because the score of 90 in biology is higher than any of her math scores.

Katelyn is correct because her biology scores have a much wider range than her math scores.

Katelyn is not correct because her score of 83 in biology is lower than any of her math scores.

Katelyn is not correct because the middle of the data is about the same for each plot.

The dot plots below show rainfall totals in the Highlands and Lowlands areas of a certain region.Which statement comparing the shapes of the dot plots is true?

Both the Highlands and the Lowlands data points are evenly distributed around the center.

Both the Highlands and the Lowlands data points are clustered toward the left of the plot.

The Highlands data points are evenly distributed around the center, while the Lowlands data points are clustered toward the left of the plot.

The Highlands data points are clustered toward the left of the plot, while the Lowlands data points are evenly distributed.

The students in Mr. McIntyre’s class and the students in Mrs. Ramos’s class were asked how many pets they each have. The dot plots below show the results.Mr. McIntyre’s ClassMrs. Ramos’s ClassWhich statement correctly compares the means of the data in the dot plots?

The mean for Mr. McIntyre’s class is about 2 more than the mean for Mrs. Ramos’s class.

The mean for Mrs. Ramos’s class is about 2 more than the mean for Mr. McIntyre’s class.

The mean for Mr. McIntyre’s class is about 1 more than the mean for Mrs. Ramos’s class.

The mean for Mrs. Ramos’s class is about 1 more than the mean for Mr. McIntyre’s class.

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Analyzing Dot Plots Answers

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