NBT Data Interpretation & Analysis

Question 1

What does a bar graph represent?

Accepted Answer

Data comparison across different categories.

Answer

Categories of data.

Answer

Relationships between variables.

Answer

Trends over time.

Question 2

What is the median of the following data set: 1, 3, 3, 6, 7, 8, 9?

Accepted Answer

6.

Answer

5.

Answer

7.

Answer

8.

Question 3

What is the mode of the following data set: 1, 2, 3, 3, 4, 5, 6?

Accepted Answer

3.

Answer

2.

Answer

4.

Answer

5.

Question 4

How is the mean of a data set calculated?

Accepted Answer

Add all values and divide by the total number of values.

Answer

Multiply all values and divide by the total number of values.

Answer

Add all values and divide by two.

Answer

Find the middle value of the data set.

Question 5

Which of the following graphs is best suited for showing trends over time?

Accepted Answer

Line graph.

Answer

Bar graph.

Answer

Pie chart.

Answer

Histogram.

Question 6

What is the range of the following data set: 4, 8, 15, 16, 23, 42?

Accepted Answer

38.

Answer

23.

Answer

16.

Answer

42.

Question 7

What does a pie chart represent?

Accepted Answer

Parts of a whole.

Answer

Trends over time.

Answer

Comparison of categories.

Answer

Distribution of data.

Question 8

If a data set has an outlier, what effect does it have on the mean?

Accepted Answer

The mean is skewed by the outlier.

Answer

The mean remains unaffected.

Answer

The mean becomes the median.

Answer

The mean is replaced by the mode.

Question 9

What is a histogram used for?

Accepted Answer

Show frequency distribution of numerical data.

Answer

Show trends over time.

Answer

Display categorical data.

Answer

Represent parts of a whole.