Draw Inferences From Random Samples

Use the center and range sheets first, then the comparison sheets. The claims sheet works well for discussion.

Use samples to estimate how many of 900 students would join a robotics club and spot biased samples. The directions on the page read: Use each sample to write a proportion and estimate how many of the 900 students would say yes. Then decide which sample method is biased. An answer key is included.

Yes, both. We made it for 7th grade data & graphing, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.

Find a measure of center such as mean or median for each group, then compare them. Add a measure of spread such as the range to describe variation.

Write an equation with the sum of the values divided by their count equal to the mean, then solve for x. The Find a Missing Value From a Target Mean worksheet does this.

Put the values in order, then find the number halfway between the two middle values. The Median of Even-Sized Sets worksheet uses rational values.

Yes. All 11 worksheets in this group have answer keys.