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CompTIA Data+ Statistical Methods & KPIs Flashcards
| Front | Back |
| What does a correlation coefficient close to -1 indicate? | A strong negative relationship. |
| What does a correlation coefficient close to +1 indicate? | A strong positive relationship. |
| What does a correlation coefficient close to 0 indicate? | No or very weak relationship. |
| What does a high standard deviation indicate? | Values are more spread out from the mean. |
| What does a low standard deviation indicate? | Values are closely clustered around the mean. |
| What does a small p-value indicate? | Strong evidence against the null hypothesis. |
| What does KPI stand for? | Key Performance Indicator. |
| What is a benchmark? | A standard or point of reference used for comparison. |
| What is a confidence interval? | A range of values likely to contain the population parameter. |
| What is a dependent variable? | The outcome or variable being measured or predicted. |
| What is a histogram? | A graph showing the frequency distribution of a dataset. |
| What is a KPI? | A measurable value that shows progress toward a specific goal. |
| What is a moving average? | A calculation used to smooth out short-term fluctuations and highlight trends. |
| What is a p-value? | The probability that the observed result occurred by chance. |
| What is a percentile? | A value below which a given percentage of data falls. |
| What is a ratio KPI? | A metric that compares two related quantities, like profit margin or conversion rate. |
| What is a scatter plot? | A graph that shows the relationship between two quantitative variables. |
| What is a trend line used for? | To visualize the general direction of data over time. |
| What is an independent variable? | The variable that is manipulated to observe its effect on the dependent variable. |
| What is correlation? | A statistical relationship between two variables. |
| What is data skewness? | A measure of asymmetry in the distribution of data values. |
| What is median? | The middle value in a sorted list of numbers. |
| What is mode? | The value that appears most frequently in a dataset. |
| What is normalization? | Adjusting data to a common scale without distorting differences in ranges. |
| What is outlier? | A data point that is significantly different from other observations. |
| What is regression analysis? | A statistical method for estimating the relationships among variables. |
| What is ROI? | Return on Investment — a performance measure used to evaluate efficiency or profitability. |
| What is standard deviation? | A measure of how spread out the values are from the mean. |
| What is the formula for mean? | Sum of all values divided by the number of values. |
| What is variance? | The average of the squared differences from the mean. |
Front
What does a correlation coefficient close to +1 indicate?
Click the card to flip
Back
A strong positive relationship.
Front
What is a dependent variable?
Back
The outcome or variable being measured or predicted.
Front
What is a ratio KPI?
Back
A metric that compares two related quantities, like profit margin or conversion rate.
Front
What is ROI?
Back
Return on Investment — a performance measure used to evaluate efficiency or profitability.
Front
What is the formula for mean?
Back
Sum of all values divided by the number of values.
Front
What is a p-value?
Back
The probability that the observed result occurred by chance.
Front
What is standard deviation?
Back
A measure of how spread out the values are from the mean.
Front
What is a KPI?
Back
A measurable value that shows progress toward a specific goal.
Front
What is mode?
Back
The value that appears most frequently in a dataset.
Front
What is a histogram?
Back
A graph showing the frequency distribution of a dataset.
Front
What does a correlation coefficient close to 0 indicate?
Back
No or very weak relationship.
Front
What is a benchmark?
Back
A standard or point of reference used for comparison.
Front
What is a percentile?
Back
A value below which a given percentage of data falls.
Front
What is a confidence interval?
Back
A range of values likely to contain the population parameter.
Front
What does KPI stand for?
Back
Key Performance Indicator.
Front
What is a scatter plot?
Back
A graph that shows the relationship between two quantitative variables.
Front
What is data skewness?
Back
A measure of asymmetry in the distribution of data values.
Front
What is outlier?
Back
A data point that is significantly different from other observations.
Front
What does a small p-value indicate?
Back
Strong evidence against the null hypothesis.
Front
What does a correlation coefficient close to -1 indicate?
Back
A strong negative relationship.
Front
What is variance?
Back
The average of the squared differences from the mean.
Front
What is a moving average?
Back
A calculation used to smooth out short-term fluctuations and highlight trends.
Front
What is correlation?
Back
A statistical relationship between two variables.
Front
What is a trend line used for?
Back
To visualize the general direction of data over time.
Front
What is regression analysis?
Back
A statistical method for estimating the relationships among variables.
Front
What is median?
Back
The middle value in a sorted list of numbers.
Front
What is an independent variable?
Back
The variable that is manipulated to observe its effect on the dependent variable.
Front
What is normalization?
Back
Adjusting data to a common scale without distorting differences in ranges.
Front
What does a low standard deviation indicate?
Back
Values are closely clustered around the mean.
Front
What does a high standard deviation indicate?
Back
Values are more spread out from the mean.
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This flashcard deck focuses on statistical methods and key performance indicators (KPIs) commonly used in data analysis. It helps learners memorize foundational terms like mean, standard deviation, correlation, and ROI, along with their definitions and use cases.