Test Your Statistics Knowledge! Put your statistics skills to the test with this 11-question quiz covering a range of topics from measures of central tendency to hypothesis testing. michelle published on April 09 Stacked 1/11 What is the average of the numbers 5, 10, and 15? 7 10 12 15 2/11 What is the formula for calculating standard deviation? Mean / Range Square root of the variance Median x Mode Mode - Median 3/11 Which of the following is NOT a measure of central tendency? Mean Median Variance Mode 4/11 What is the first step in hypothesis testing? State the null and alternative hypotheses Analyze the sample data Draw a conclusion Collect data 5/11 What is the range of the numbers 3, 8, 10, 13, 17? 10 13 15 14 6/11 Which statistical test is used to compare the means of two independent groups? t-test ANOVA Chi-squared test Regression analysis 7/11 What does a p-value of 0.05 indicate in hypothesis testing? Statistically significant result No relationship between variables Margin of error Data is normally distributed 8/11 What is the mode of the numbers 2, 4, 6, 4, 8? 2 4 6 8 9/11 When calculating probability, what is the total sum of all possible outcomes? Median 1 Mode 2 10/11 Which type of chart is used to represent categorical data? Histogram Bar graph Scatter plot Box plot 11/11 In a normal distribution, what percentage of data falls within one standard deviation from the mean? 25% 68% 95% 99.7%