Vocab Unit 3 Data

What is the mean of a data set?

• The mean is the highest number divided by the lowest number in a data set.

• The mean is the average, or the sum of all the data divided by the number of data points in the set.

• The mean is the number that occurs most frequently.

• The mean is the middle number of the data set when the values are ordered from least to greatest.

Answer explanation

Ex. if the data is 3,5,5,7,9 the mean would be 3+5+5+7+9=29 divided by 5 since there are 5 numbers. 29/5=5.8 so 5.8 is the average or mean for that data set.

Tags

CCSS.6.SP.B.5C

What is the median of a data set?

• The median is the highest number divided by the lowest number in a data set.

• The median is the average, or the sum of all the data divided by the number of data points in the set.

• The median is the number that occurs most frequently.

• The median is the middle number of the data set when the values are ordered from least to greatest.

Answer explanation

Ex. if the data is 3,5,5,7,9 the median would be 5 because the numbers are in order from least to greatest and 5 (the second one) is in the middle.

Tags

CCSS.6.SP.B.5C

What is the mode of a data set?

• The mode is the highest number divided by the lowest number in a data set.

• The mode is the average, or the sum of all the data divided by the number of data points in the set.

• The mode is the number that occurs most frequently.

• The mode is the middle number of the data set when the values are ordered from least to greatest.

Answer explanation

Ex. if the data is 3,5,5,7,9 the mode would be 5 because it is the data value that happens most frequently.

Tags

CCSS.6.SP.B.5C

What is the range of a data set?

• The range is the highest number divided by the lowest number in a data set.

• The range is the difference between the highest and lowest data points.

• The range is the number that occurs most frequently.

• The range is the middle number of the data set when the values are ordered from least to greatest.

Answer explanation

Ex. if the data is 3,5,5,7,9 the range would be 9-3 or 6. The range tells us how spread out the data values are. As in, the data ranges from 3 to 9...

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is an outlier?

• An outlier is a data value that is much greater or much less than most of the rest of the numbers.

• An outlier is a person who is responsible for catching the baseball before it hits the ground and allows a batter to get on base.

• An outlier is someone who tells tall tales and gets kicked out of study groups.

Answer explanation

An outlier is a data value that is not normal for the data set. Like a 6'4" 8th grader.

Which is a frequency table?

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Answer explanation

The frequency tells us how frequently a data value occurred in the set.

Tags

CCSS.1.MD.C.4

What is a histogram?

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Answer explanation

A histogram shows data a bar for the frequency of data in an interval, like 0-10 (zero through ten). It is like a bar graph for numerical data.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is a box and whisker plot?

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Answer explanation

A box and whisker plot divides the data into quartiles (4 parts) and graphs each part on the number line. The lowest and highest quartiles are the whiskers, the middle two quartiles are the box, and the median is the line in the middle of the box.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is a stem and leaf plot?

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Answer explanation

Don't forget to make a key! The picture on this example didn't have one. It should have had a key like this: Key: 3|2=32

What is a scatterplot?

• A scatter plot shows two variables, one on the x axis and one on the y axis. The data is shown as ordered pairs (x,y)

• A scatter plot shows data on a number line. The data values are scattered over the line.

• A scatter plot is a data display that shows a bar for each interval and each bar's height shows the frequency.

Answer explanation

Tags

CCSS.8.SP.A.1