Interpreting Histograms: Key Concepts and Examples

This video tutorial covers lesson six on reading histograms. It begins with a review of histograms, explaining how they display data in intervals or ranges. The tutorial uses ACT exam scores as an example to demonstrate how to analyze data using histograms. It includes calculating percentages and comparing different data ranges. The video also provides practice questions to reinforce learning.

What is the primary difference between histograms and bar graphs?

• Histograms and bar graphs both show categorical data.

• Bar graphs display continuous data ranges, while histograms show categorical data.

• Histograms display continuous data ranges, while bar graphs show categorical data.

• There is no difference between histograms and bar graphs.

What type of data is typically represented in a histogram?

• Individual exact values

• Data in intervals or ranges

• Percentage data only

• Nominal categorical data

What does a histogram help to understand about data?

• The overall spread and shape of the data

• Only the highest and lowest values

• The names of data categories

• The exact values of each data point

How many scores were reported in the range of 16 to 20 in the ACT score histogram?

• 28 scores

• 34 scores

• 16 scores

• 17 scores

What is the total number of scores included in the histogram data set?

• 50 scores

• 150 scores

• 200 scores

• 100 scores

Which score range represents 17% of the data?

• 21 to 25

• 26 to 30

• 16 to 20

• 11 to 15

What percentage of the scores falls within the 21 to 25 range?

• 17%

• 28%

• 34%

• 62%

Which two score ranges together make up more than 60% of the data?

• 21 to 25 and 26 to 30

• 11 to 15 and 16 to 20

• 1 to 5 and 6 to 10

• 16 to 20 and 21 to 25

How does the number of scores between 11 to 15 compare to those between 26 to 30?

• 11 to 15 has one more score than 26 to 30

• 26 to 30 has one more score than 11 to 15

• Both ranges have the same number of scores

• The data does not specify the scores for these ranges

What is the significance of the score range 16 to 25 in the histogram?

• It represents the middle range of scores.

• It includes the highest number of scores.

• It represents the lowest scores.

• It is not shown in the histogram.