One Variable Statistics P5

Front

What is a dot plot?

Back

A dot plot is a statistical chart that consists of dots representing the frequency of data points in a dataset, allowing for easy visualization of distribution.

Front

What is the median in a dataset?

Back

The median is the middle value of a dataset when it is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you find the upper quartile (Q3) of a dataset?

Back

To find the upper quartile (Q3), first arrange the data in ascending order, then find the median of the upper half of the data.

Front

What is the significance of the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of the dataset and represents the 25th percentile, indicating that 25% of the data points fall below this value.

Front

How do you calculate the range of a dataset?

Back

The range is calculated by subtracting the smallest value in the dataset from the largest value.

Front

What does it mean if a dataset has a mode?

Back

The mode is the value that appears most frequently in a dataset. A dataset can have one mode, more than one mode, or no mode at all.

Front

What is the purpose of using statistics in data analysis?

Back

Statistics are used to summarize, analyze, and interpret data, helping to make informed decisions based on quantitative information.

Front

How can you determine the total number of observations in a dataset from a dot plot?

Back

The total number of observations can be determined by counting the total number of dots in the dot plot, as each dot represents one observation.

Front

What is the difference between descriptive and inferential statistics?

Back

Descriptive statistics summarize and describe the characteristics of a dataset, while inferential statistics use a sample to make predictions or inferences about a larger population.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a dataset, often represented in a table or graph.