West B Test West B Math: Data Analysis and Statistics 3

Question 1

A scatter plot shows points that generally move from the lower left to the upper right. This pattern is called:

Accepted Answer

A positive correlation

Answer

A negative correlation

Answer

No correlation

Answer

A random distribution

Question 2

A school surveys 100 students and finds 60 prefer online learning and 40 prefer in-person learning. What fraction prefers in-person learning?

Accepted Answer

2/5

Answer

3/5

Answer

1/4

Answer

1/2

Question 3

When data is said to be 'skewed right,' it means:

Accepted Answer

Most values are clustered on the left with a tail extending right.

Answer

Most values are high and a few are very low.

Answer

The data is evenly distributed on both sides.

Answer

The median is higher than the mean.

Question 4

What is the probability of rolling a 3 on a standard six-sided die?

Accepted Answer

1/6

Answer

1/3

Answer

1/2

Answer

1/4

Question 5

A student's test scores are 88, 92, 76, 95, and 84. What score would need to be added so that the mean equals exactly 87?

Accepted Answer

83

Answer

87

Answer

85

Answer

91

Question 6

Which measure of central tendency is LEAST affected by extreme outliers in a data set?

Accepted Answer

Median

Answer

Mean

Answer

Range

Answer

Sum