The square root of the standard deviation. The sum of the average deviations between the data values and the mean. The sum of the squared deviations between the data values and the mean. 20) Which of the following are a possible set of descriptive statistics for a data set [Choose all correct answers]? Sum of squares of 18, variance of 6, standard deviation of 36 Sum of squares of 18, variance of 36, standard deviation of 6 Sum of squares of 180, variance of 6, standard deviation of 36 Sum of squares of 180, variance of 36, standard deviation of 6 21) What is the median number of galls found on 30 leaves collected from one plant? Use the frequency table below to determine this value. Number of Galls Frequency 0 CA WN - CAN DO A 22) What is the mean number of galls found on 30 leaves collected from one plant? Use the frequency table below to determine this value. Number of Galls Frequency 0 9 W A N CO A C AW N - 23) Imagine we have a symmetric data set for which we have calculated various statistics, but then a single very large outlier is added to it. When we recalculate the statistics, which of the following things is NOT true? The mean increases. The median increases. The standard deviation increases. The variance increases.It shows the sample size of the treatments It shows the magnitudes of the data honestly 12-14) What kind of graph should you use to best display the following 3 sets of variables? [Choose all that apply for each] 12) Two categorical variables Bar Graph Histogram Line Graph Scatterplot Strip Plot 13) One categorical and one continuous variable Bar Graph Histogram Line Graph Scatterplot Strip Plot 14) One continuous variable over time Bar Graph Histogram Line Graph Scatterplot Strip Plot 15) Which of the following values is the mode of the data set (if the x-axis is the measurement and the y-axis is the frequency)? 30 25 25 30 20 15 10 0 1 2 3 4 5 6 7 8 9 10 11 12 16) Consider an experiment in which female and male rats are weighed and then their food consumption is measured (figure below). Which variable represents the response variable and which represents the explanatory variable?30- Male Female 25 - 20- consumed per day # of food pellets A 20 22 24 26 28 Mean mass (9) The response variable is the sex and the explanatory variable is the weight The response variable is the weight; the explanatory variable is the food consumption The response variable is the food consumption; the explanatory variable is the weight The response variable is the sex and the explanatory variable is the food consumption 17) Which of the following is generally true for pie charts? Frequencies are easy to compare across different pie charts. Frequencies are hard to compare visually when there are many categories. Pie charts are better for showing absolute frequencies than relative frequencies. Pie charts are better for showing relative frequencies than absolute frequencies 18) Which of the following would greatly improve the utility of the frequency table shown for the number of fish caught by a fishing boat during a four hour fishing voyage. Frequency Species number of fish caught) Bass 10 Walleye 12 Perch Bullhead 11 Instead of a row for each fish species, there should be a column for each species, with the number listed underneath. The rows should be sorted alphabetically based on the fish species name. The rows should be sorted numerically based on the number of fish caught. The scientific names of the fish should be provided on each row. 19) Which of the following accurately describes the numerator for the equation to calculate the variance? The average of all the values