additional_flashcards_statistics_video_2.csv

Question,Answer A,Answer B,Answer C,Answer D,Correct Answer,Answer Info (+ Explanation) "You are a manager at a retail store, and you want to see if there's a relationship between promotional discounts and sales figures over time. Which type of plot would be most suitable to analyze this relationshi...

Question,Answer A,Answer B,Answer C,Answer D,Correct Answer,Answer Info (+ Explanation) "You are a manager at a retail store, and you want to see if there's a relationship between promotional discounts and sales figures over time. Which type of plot would be most suitable to analyze this relationship?",Bar chart,Scatter plot,Pie chart,Histogram,B,"B) Scatter plot. A scatter plot is best for visualizing relationships between two variables (in this case, discounts and sales figures). Each point represents the relationship at a specific time." "A survey is conducted to see how employees rate their satisfaction on a scale of 1 to 5. The survey also records the department each employee belongs to. If you want to compare average satisfaction levels across departments, which chart would you use?",Bar chart,Histogram,Time plot,Pie chart,A,A) Bar chart. A bar chart is effective here because it allows you to compare the average satisfaction levels of multiple categories (departments). Which of these plots would be more appropriate to show the distribution of a single variable like people's heights?,Histogram,Line graph,Bar chart,Time plot,A,A) Histogram. A histogram displays how a single quantitative variable (heights) is distributed over a range of intervals. Which plot would be most appropriate to show each individual score in a small classroom of 25 students?,Scatter plot,Stem plot,Time plot,Histogram,B,B) Stem plot. A stem plot would effectively show each individual score in a small class of 25 students while maintaining the distribution. "If a histogram shows 3 bars with the following frequencies in each interval: \[20, 30), \[30, 40), and \[40, 50). The first interval has 10 values, the second has 15 values, and the third has 5 values. What is the total number of data points in the histogram?",20,30,15,25,B,B) The total number of data points is the sum of all values in each interval: 10 + 15 + 5 = 30. \"If a stem plot shows the following data: Stem | Leaf 12 | 3 4 8 13 | 2 5 14 | 0 2 7 What is the median of these values?",132,134,136,140,B,"B) The sorted values from the plot are 123, 124, 128, 132, 135, 140, 142, and 147. The median (middle value) between the 4th and 5th value is 134.\"