Describing Data with Statistics and Graphs

The video tutorial covers various statistical concepts, including creating and analyzing dot plots, identifying outliers, and constructing box plots. It explains different types of histograms and their skewness, and how to interpret two-way frequency tables. The tutorial also discusses scatter plots, correlation, and how to use Desmos for finding the line of best fit.

What is essential for the dots in a dot plot?

• Only one dot per data point

• Random placement

• Consistent size and alignment

• Different sizes for each dot

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is the median value in the given data?

• 20

• 14

• 10

• 5

Tags

CCSS.6.SP.B.5C

How is the IQR calculated?

• Maximum - Minimum

• Median - Q1

• Q3 - Q1

• Q3 + Q1

Tags

CCSS.6.SP.B.5C

What does the inner quartile range (IQR) represent?

• Spread of the middle 50% of data

• Difference between the highest and lowest values

• Average value of the data set

• Sum of all data points divided by the number of points

Tags

CCSS.6.SP.B.5C

What indicates an outlier above the upper bound?

• Data value above Q3 + 1.5 * IQR

• Data value below Q1 - 1.5 * IQR

• Data value above Q1 + 1.5 * IQR

• Data value below Q3 - 1.5 * IQR

What does a left-skewed histogram indicate about the mean and median?

• Mean is equal to median

• Cannot be determined

• Mean is less than median

• Mean is greater than median

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

What is the sample size of the surveyed students?

• 525

• 1825

• 495

• 580

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

What percentage of students wanted an ice cream social?

• 50%

• 31.78%

• 28.57%

• 25%

What type of correlation is indicated by a line of best fit with a positive slope?

• Positive correlation

• No correlation

• Cannot be determined

• Negative correlation

Tags

CCSS.8.SP.A.2

How do you find the line of best fit using Desmos?

• Only input the slope

• Calculate manually then input

• Input your data values

• Type in the equation first

Tags

CCSS.8.EE.B.5