C207 Data-Driven Decision Making Practice Questions - Set 2 - Part 3

Test your knowledge of data-driven decision making concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 41: A control chart is used to:

Measure the average deviation in a dataset

Track a process's performance over time with upper and lower control limits

Test the validity of a hypothesis

Compare two or more groups

Question 42: A hypothesis is:

A statistical test

A prediction or explanation used as the basis for further investigation

A model for explaining relationships

A measure of variability in the data

Question 43: A z-score of 2.0 means that the data point is:

Two units away from the mean

Two standard deviations above the mean

Twice the value of the mean

Within the interquartile range

Question 44: Variance measures:

The average of the data points

The spread or dispersion of a dataset

The total number of data points in a sample

The correlation between two variables

Question 45: An alternative hypothesis:

Assumes there is no difference between groups

Assumes there is a difference between groups

Assumes the sample is the same as the population

Measures the significance level of an experiment

Question 46: A test statistic is:

A calculation used to measure the strength of a relationship

A value calculated from sample data to test a hypothesis

A measurement of correlation

A model for analyzing time series data

Question 47: The run chart is similar to a line chart but focuses on:

Comparing means across groups

Showing performance measurements over time

Testing categorical data

Visualizing statistical significance

Question 48: The confidence level of a hypothesis test represents:

The probability that the null hypothesis is correct

The probability that the observed result is due to chance

The proportion of times the true parameter falls within the confidence interval if the test is repeated

The probability of rejecting the null hypothesis

Question 49: The Chi-squared test is commonly used to:

Compare means between groups

Test the independence of categorical variables

Predict future outcomes based on past data

Measure the correlation between two variables

Question 50: The measure of how spread out numbers are in a dataset is called:

Standard deviation

Interquartile range

Median

Mode

Struggling With Exams?

Less Time Studying, More Time Living – Finish Your Degree Faster! Pay-After-you-Pass

Get Exam Support