📊 statistics

1. **Problem Statement:** We have data of temperature (°F) and cups of hot chocolate sold for 11 days. We want to find the linear trend line (line of best fit) and use it to estima

1. **Problem Statement:** Determine if scatterplot 7 has a linear or non-linear trend line. 2. **Understanding Scatterplots:** A scatterplot shows data points plotted on a coordina

1. **State the problem:** We need to find the correlation coefficient $r$ for the given data points $(x, y)$: $(0, 15), (5, 10), (10, 5), (15, 0)$. 2. **Formula for correlation coe

1. The problem asks which r-value represents the most moderate correlation. 2. The correlation coefficient $r$ ranges from $-1$ to $1$, where values close to $\pm 1$ indicate stron

1. The problem asks to identify which relationships are most likely causal from given correlations. 2. A causal relationship means one variable directly affects the other.

1. The problem asks which r-value represents the strongest correlation. 2. The correlation coefficient $r$ measures the strength and direction of a linear relationship between two

1. The problem asks which r-value represents the strongest negative correlation. 2. The correlation coefficient $r$ ranges from $-1$ to $1$.

1. **State the problem:** We need to determine the most likely correlation coefficient for the given scatter plot data points: approximately (1,2), (2,4), (3,2), (4,3), and (5,3).

1. **Problem statement:** Find the mean, median, mode, and range for the first set of numbers: 83, 91, 52, 89, 91, 67, 87. 2. **Mean formula:** The mean is the sum of all numbers d

1. **Stating the problem:** Calculate the median, mode (dominanta), and arithmetic mean (średnia arytmetyczna) for the data set:

1. **Stating the problem:** Determine whether the statement "A time series approach to forecasting assumes that the value of a certain variable is a function of another variable" i

1. **State the problem:** We need to forecast lunch sales for the upcoming week using a three-week moving average based on past sales of 2200, 2400, and 2000. 2. **Formula:** The t

1. **State the problem:** We have a dataset of 7 students with their GPA values: 3.5, 3.1, 3.2, 4.0, 3.6, 3.2, 2.7. 2. We want to find how the mean and median GPA change if a new s

1. **State the problem:** We are given a set of numbers: 18, 21, 20, 12, 26, 19, 9. We need to find the range of this data set. 2. **Formula for range:** The range is the differenc

1. The problem asks to find the range of the given set of numbers: 72, 77, 73, 71, 76, 62, 61, 75. 2. The range of a data set is calculated using the formula:

1. **State the problem:** We have two data sets representing the number of pies sold on Thanksgiving and the Fourth of July over 7 years. We need to find the mean and range for eac

1. **State the problem:** We are given a data set representing the number of states traveled to or lived in: 2, 3, 6, 2, 6, 1, 11, 8, 2, 1, 5, 2, 1, 7, 14. 2. **Find the median, mo

1. **State the problem:** We are given a data set representing the number of states traveled to or lived in: 2, 3, 6, 2, 6, 1, 11, 8, 2, 1, 5, 2, 1, 7, 14. 2. **Order the data from

1. **State the problem:** We are given a list of numbers representing states traveled to or lived in: 2, 3, 6, 2, 6, 1, 11, 8, 2, 1, 5, 2, 1, 7, 14. 2. **What is asked:** Order the

1. **State the problem:** We have a data set representing the number of states traveled to or lived in: $$1, 5, 6, 2, 6, 1, 12, 7, 1, 2, 6, 1, 2, 9, 13$$

1. **State the problem:** We are given a frequency table showing the number of siblings people have and asked to find the median number of siblings. 2. **Recall the median definiti