How does a pie chart form conclusions? a. plotting all of the observations b. showing a constant ratio with the trend line c. showing how data falls into categories with the relative wedge sizes d. showing quantity by category

Which events occurred during the space race? check all that apply. (a) nasa was established. (b) yuri gagarin orbited earth. (c) the soviet union launched salyut. (d) the united states launched skylab. (e) the united states launched explorer 1.