A scatter plot was made to show the results of a survey where individuals were asked how many years
of experience they have at their job and what their
annual income is.
A trend line drawn on the scatter plot has an
equation of y = 1,950x + 36,000 where y is the
person's annual income, and x is their number of
years of experience.
Which is the best interpretation of the y-intercept in
the trend line equation?

What is the upper quartile in the box plot?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.