Comparing Dot Plots in 7th Grade Science

Miss Fernandez explains dot plots, focusing on key statistical terms like mean, median, mode, and range. She provides examples and visual aids to clarify these concepts. The video also covers advanced terms such as variability, clusters, and skewness, and compares dot plots of math and science homework to illustrate these ideas.

How do you calculate the mean of a set of numbers?

• Multiply all the numbers and divide by the total count

• Add all the numbers and divide by the total count

• Subtract all the numbers and divide by the total count

• Divide all the numbers by the total count

What does the median represent in a dot plot?

• The average value of the set

• The difference between the highest and lowest values

• The most frequently occurring number

• The middle value when the numbers are in order

How can you find the median in a dot plot?

• By identifying the most frequently occurring dot

• By calculating the average of all dots

• By counting the dots equally from both sides until you reach the center

• By finding the dot at the very top

What is the mode in a set of numbers?

• The difference between the highest and lowest values

• The most frequently occurring number

• The least occurring number

• The middle value

How is the range of a dot plot calculated?

• By counting the number of dots

• By subtracting the lowest value from the highest value

• By dividing the highest value by the lowest value

• By adding the highest and lowest values

What is the range in a set of numbers?

• The most frequently occurring number

• The total count of numbers

• The average of the numbers

• The difference between the highest and lowest numbers

What does an outlier represent in a dot plot?

• The middle value

• The average value

• A value that is significantly higher or lower than the others

• The most common value

What does it mean if a dot plot is skewed to the right?

• The majority of the data is concentrated on the right

• The majority of the data is concentrated on the left

• There is no clear concentration of data

• The data is evenly distributed

What does a cluster in a dot plot indicate?

• A concentration of values in a specific area

• A group of values far away from the rest

• A single outlier value

• A range of values with no occurrences

In comparing dot plots of math and science homework hours, what can be inferred?

• There is no clear pattern in homework hours

• Students spend the same amount of time on both subjects

• Students spend more time on science homework

• Students spend more time on math homework