BASIC STATS - MODULE 5

1. A correlation coefficient (r) of 0.8 indicates:
   

• A weak positive relationship.

• A strong positive relationship.

• A weak negative relationship.

• No relationship.

Tags

NGSS.MS-PS3-1

1. A correlation coefficient (r) of -0.28 indicates:
   

• A strong negative relationship.

• A moderate positive relationship.

• A weak negative relationship.

• No relationship.

Tags

NGSS.HS-LS3-3

1. When interpreting a scatter plot, what does a downward trend indicate?

• Positive correlation

• Negative correlation

• No correlation

• Strong correlation

1. The correlation between vocabulary knowledge and reading comprehension scores is 0.6. How would you describe this relationship?
   

• Weak positive correlation

• Moderate positive correlation

• Strong positive correlation

• No correlation

1. A histogram with a right skew indicates:

• The majority of scores are high.

• The majority of scores are low.

• Scores are evenly distributed.

• Scores are normally distributed.

1. If a scatter plot of two variables shows points closely clustered around a line that slopes upward, this indicates:
   

• A strong negative correlation

• A weak negative correlation

• A strong positive correlation

• No correlation

1. A bar chart compares the number of books read by boys and girls over a semester. If girls have consistently taller bars, what can be inferred?
   

• Boys read more books than girls 

• Girls read more books than boys 

• Both boys and girls read the same number of books 

• The chart does not provide enough information

1. A table shows the average reading comprehension scores of students in two groups: those who attended extra reading classes and those who did not. If the scores of the former are significantly higher, what does this suggest?

• Extra reading classes are not effective 

• Extra reading classes are effective 

• Both groups have similar scores 

• The table data is inconclusive

1. A histogram shows the frequency of different scores on a vocabulary test. If the majority of bars are concentrated on the left side, what can be inferred?

• Most students scored high on the test 

• Most students scored low on the test 

• Scores are evenly distributed 

• The test was not challenging

1. A line graph shows students' reading speed improvement over time. If the line starts high and then gradually decreases, what does this indicate?

• Students' reading speed is decreasing

• Students' reading speed is improving

• There is no change in students' reading speed

• The graph data is not clear